Dr. Dietz is a graduate of Susquehanna University in Selinsgrove, Pennsylvania, where he earned his Bachelor of Science degree in Biology in 1995. He then attended NOVA Southeastern College of Osteopathic Medicine in Fort Lauderdale, Florida. He completed his Internal Medicine Residency at Largo Medical Center in Largo, Florida in 2009. He has been practicing urgent care and internal medicine for more than 15 years in the Richmond, VA area. Dr. Dietz is the founder of Premier Wellness Consultants. He is also a member of the American Osteopathic Association, American College of Osteopathic Internists, and the American Association of Medical Review Officers. Dr. Dietz is a dedicated physician with a passion for providing high-quality patient care. Outside of medicine, he enjoys home brewing, experimenting with new recipes and techniques, and engaging in amateur radio, connecting with fellow enthusiasts worldwide.

Dr. Saddam Zaidi is a board-certified internal medicine physician dedicated to delivering comprehensive, patient-focused care. His background includes hospital medicine, acute care, and outpatient practice, giving him a wide perspective on managing both complex medical conditions and everyday health needs. Dr. Zaidi's approach emphasizes prevention, early intervention, and shared decision-making. He takes time to listen, explain treatment options clearly, and partner with patients to build long-term wellness plans. He provides care for adults of all ages, with special interest in hypertension, diabetes, heart disease, preventive health, and lifestyle-focused medicine. Dr. Zaidi is committed to offering accessible, respectful, and high-quality care to every patient he serves and looks forward to supporting the Williamsburg community.

Dr. Yelyzaveta Prysyazhnyuk is a compassionate and highly trained physician with a strong commitment to advancing mental health care. She brings a rich background in internal medicine and a deep interest in the intersection of physical and mental well-being to her role at Vital Psych MD LLC. Dr. Prysyazhnyuk completed her undergraduate studies at Barnard College of Columbia University before earning her medical degree from SUNY Downstate College of Medicine. She went on to complete her residency in Internal Medicine at the Zucker School of Medicine at Hofstra/Northwell NS/LIJ, where she also obtained certifications as a clinician educator and in lifestyle medicine. At Vital Psych MD, Dr. Prysyazhnyuk is excited to focus her practice on supporting individuals through evidence-based care that bridges the gap between physical and mental health. Her clinical experience and academic foundation have shaped her integrative approach, helping achieving overall well-being and a lasting change.

Drew Simmelink, MD, is a board-certified Gastroenterologist at Richmond Gastroenterology Associates. Dr. Simmelink sees patients primarily at the practice’s Hanover office in Mechanicsville, Virginia, but also takes appointments at the West Creek office in Henrico. 

Dr. Simmelink received his Bachelor of Science Honors Program degree in Biochemistry and Molecular Biology at the University of Richmond (U of R) in Virginia, achieving Dean’s Honor List all four years of his undergraduate career. He went to Eastern Virginia Medical School (EVMS) to earn his medical doctorate, receiving honors marks in internal medicine training.

Dr. Simmelink completed his internship and residency in internal medicine at Carolinas Medical Center (CMC) in Charlotte, North Carolina, where he was selected to stay for his three-year Fellowship in Gastroenterology and Hepatology.

During the fellowship, Dr. Simmelink gained extensive experience managing complex liver and inflammatory bowel diseases through the CMC liver transplant and inflammatory bowel disease programs. Additionally, he gained insightful experience in motility issues, earning certification from the American Neurogastroenterology and Motility Society (ANMS).

While in his internal medicine residency and gastroenterology fellowship, Dr. Simmelink exhibited an interest in improving patient safety. He also championed increasing population-wide colorectal cancer and hepatitis-C screening rates through quality improvement projects.

Dr. Simmelink is clinically interested in managing a wide variety of digestive diseases, including, but not limited to, inflammatory bowel disease and immune-mediated bowel disorders, Crohn’s disease, ulcerative colitis, Celiac disease, medication-induced conditions, liver disease (alcohol and obesity-induced liver disease), Wilson’s disease, autoimmune hepatitis, hemochromatosis, viral hepatitis, disorders of the gut-brain interaction, IBS, dyspepsia, heartburn and GERD, peptic ulcer disease, constipation, diarrhea, and Barrett’s esophagus.

He is skilled in many GI procedures, including upper endoscopy (EGD), esophageal dilation, Barrett’s esophagus ablation & management, colonoscopy, colorectal cancer screening, colon polyp removal, endoscopic mucosal resection (EMR), endoscopic management of inflammatory bowel disease, enteral access (PEG tube placement), and video capsule endoscopy.

He is a member of the American Society for Gastrointestinal Endoscopy (ASGE), the American Gastroenterological Association (AGA), the American College of Gastroenterology (ACG), and the American College of Physicians (ACP).

Serving his community has always been an integral part of his life, exemplified in achieving the rank of Eagle Scout in the Boy Scouts of America, joining the Alpha Phi Omega national service fraternity in college, to helping out with local support groups for Huntington’s disease and aiding underserved patients through Beyond Clinic Walls during his medical school career. 

In his spare time, Dr. Simmelink enjoys landscaping and remodeling homes, playing the piano, enjoying water sports, including swimming & kayaking, experimenting with new recipes from different cultures, and mastering the grill.

Sachit Sharma, MD, is a board-certified gastroenterologist and hepatologist at Richmond Gastroenterology Associates in Richmond, Virginia. Dr. Sharma sees patients at the Midlothian office in N. Chesterfield, Virginia. 

Dr. Sharma's medical career began with an MBBS degree from Manipal College of Medical Sciences in Nepal, where he graduated with honors in 2013, supported by a full scholarship from the Ministry of Education and Sports of the Government of Nepal. His clinical acumen was further honed during his Internal Medicine Residency at John H. Stroger Jr. Hospital of Cook County in Chicago, IL, followed by a tenure as Chief Resident at the University of Toledo, OH. Dr. Sharma then worked as a Hospitalist at Promedica Toledo Hospital before completing his Fellowship in Gastroenterology, Hepatology, and Nutrition at Virginia Commonwealth University in July 2024.

His contributions to the field are substantial, with numerous peer-reviewed publications that address diverse topics such as the efficacy of endoscopic techniques, prognostic markers for hepatocellular carcinoma, and the impact of various interventions on gastrointestinal outcomes. Noteworthy publications include systematic reviews and meta-analyses on endoscopic treatments and prognostic factors, reflecting his expertise and ongoing research efforts.

Dr. Sharma's professional affiliations include memberships in the American College of Gastroenterology (ACG), the American Society for Gastrointestinal Endoscopy (ASGE), and the American Gastroenterological Association (AGA). His commitment to the field is also evidenced by his ABIM Board Certification in Internal Medicine and his active involvement in various national and international medical societies.

Fluent in English, Nepali, Hindi, and Urdu, he brings a diverse linguistic and cultural perspective to his practice. Dr. Sharma's dedication to both clinical excellence and research makes him a valuable asset to the gastroenterology community, continuously working towards improving patient outcomes and advancing medical knowledge.

Dr. Sharma resides in the suburbs of Richmond, VA with his family. 

W. Colin Gallahan, MD is a board-certified Gastroenterologist at Richmond Gastroenterology Associates. Dr. Gallahan sees patients at the Westchester office in Midlothian, Virginia.

He received his undergraduate degree and medical degree from the University of Virginia (UVA). After graduating from medical school, Dr. Gallahan completed his internship and residency in internal medicine at Duke University Medical Center. He completed his fellowship in gastroenterology at Wake Forest University Baptist Medical Center (WFU).

After completing his GI fellowship, he was selected to stay on at WFU to complete an additional year of specialty training in Advanced Endoscopy, with a primary focus on endoscopic ultrasound (EUS). He was fortunate to train with instructors who are nationally recognized experts in Advanced Endoscopy.

Because of his advanced training in endoscopic ultrasound, Dr. Gallahan has a special interest in diagnosing and staging GI cancers and managing diseases of the pancreas. He also cares for patients with a variety of GI disorders, including inflammatory bowel disease (IBD), acid reflux, swallowing disorders, liver disease, and biliary and gallbladder disorders. 

Dr. Gallahan is a strong advocate for colon cancer screening. He is skilled in performing endoscopic ultrasound (EUS), colonoscopy, colon polyp removal, upper endoscopy (EGD), and ERCP.

He is a member of the American College of Gastroenterology (ACG), the American Society for Gastrointestinal Endoscopy (ASGE), and the American Gastroenterological Association (AGA). He also serves the community as a member of the Richmond Academy of Medicine (RAM).

“Taking care of patients is a great privilege and responsibility. I always try to be as thorough as possible, and my goal is to communicate openly and honestly with my patients. I believe patients will ultimately do better if they understand their illness and treatment plan.”

Dr. Gallahan grew up in the Northern Neck of Virginia. He attended Woodberry Forest School before his time in Charlottesville. Dr. Gallahan is married to a native Richmonder and has three children. He and his family regularly attend Hope Church. 

Dr. Gallahan is a huge fan of all sports and avidly follows the Washington Commanders and UVA athletics. He enjoys coaching his children’s sports teams and likes to sneak away to the golf course whenever he can.

W. Colin Gallahan, MD is a board-certified Gastroenterologist at Richmond Gastroenterology Associates. Dr. Gallahan sees patients at the Westchester office in Midlothian, Virginia.

He received his undergraduate degree and medical degree from the University of Virginia (UVA). After graduating from medical school, Dr. Gallahan completed his internship and residency in internal medicine at Duke University Medical Center. He completed his fellowship in gastroenterology at Wake Forest University Baptist Medical Center (WFU).

After completing his GI fellowship, he was selected to stay on at WFU to complete an additional year of specialty training in Advanced Endoscopy, with a primary focus on endoscopic ultrasound (EUS). He was fortunate to train with instructors who are nationally recognized experts in Advanced Endoscopy.

Because of his advanced training in endoscopic ultrasound, Dr. Gallahan has a special interest in diagnosing and staging GI cancers and managing diseases of the pancreas. He also cares for patients with a variety of GI disorders, including inflammatory bowel disease (IBD), acid reflux, swallowing disorders, liver disease, and biliary and gallbladder disorders. 

Dr. Gallahan is a strong advocate for colon cancer screening. He is skilled in performing endoscopic ultrasound (EUS), colonoscopy, colon polyp removal, upper endoscopy (EGD), and ERCP.

He is a member of the American College of Gastroenterology (ACG), the American Society for Gastrointestinal Endoscopy (ASGE), and the American Gastroenterological Association (AGA). He also serves the community as a member of the Richmond Academy of Medicine (RAM).

“Taking care of patients is a great privilege and responsibility. I always try to be as thorough as possible, and my goal is to communicate openly and honestly with my patients. I believe patients will ultimately do better if they understand their illness and treatment plan.”

Dr. Gallahan grew up in the Northern Neck of Virginia. He attended Woodberry Forest School before his time in Charlottesville. Dr. Gallahan is married to a native Richmonder and has three children. He and his family regularly attend Hope Church. 

Dr. Gallahan is a huge fan of all sports and avidly follows the Washington Commanders and UVA athletics. He enjoys coaching his children’s sports teams and likes to sneak away to the golf course whenever he can.

Sachit Sharma, MD, is a board-certified gastroenterologist and hepatologist at Richmond Gastroenterology Associates in Richmond, Virginia. Dr. Sharma sees patients at the Midlothian office in N. Chesterfield, Virginia. 

Dr. Sharma's medical career began with an MBBS degree from Manipal College of Medical Sciences in Nepal, where he graduated with honors in 2013, supported by a full scholarship from the Ministry of Education and Sports of the Government of Nepal. His clinical acumen was further honed during his Internal Medicine Residency at John H. Stroger Jr. Hospital of Cook County in Chicago, IL, followed by a tenure as Chief Resident at the University of Toledo, OH. Dr. Sharma then worked as a Hospitalist at Promedica Toledo Hospital before completing his Fellowship in Gastroenterology, Hepatology, and Nutrition at Virginia Commonwealth University in July 2024.

His contributions to the field are substantial, with numerous peer-reviewed publications that address diverse topics such as the efficacy of endoscopic techniques, prognostic markers for hepatocellular carcinoma, and the impact of various interventions on gastrointestinal outcomes. Noteworthy publications include systematic reviews and meta-analyses on endoscopic treatments and prognostic factors, reflecting his expertise and ongoing research efforts.

Dr. Sharma's professional affiliations include memberships in the American College of Gastroenterology (ACG), the American Society for Gastrointestinal Endoscopy (ASGE), and the American Gastroenterological Association (AGA). His commitment to the field is also evidenced by his ABIM Board Certification in Internal Medicine and his active involvement in various national and international medical societies.

Fluent in English, Nepali, Hindi, and Urdu, he brings a diverse linguistic and cultural perspective to his practice. Dr. Sharma's dedication to both clinical excellence and research makes him a valuable asset to the gastroenterology community, continuously working towards improving patient outcomes and advancing medical knowledge.

Dr. Sharma resides in the suburbs of Richmond, VA with his family. 

Drew Simmelink, MD, is a board-certified Gastroenterologist at Richmond Gastroenterology Associates. Dr. Simmelink sees patients primarily at the practice’s Hanover office in Mechanicsville, Virginia, but also takes appointments at the West Creek office in Henrico. 

Dr. Simmelink received his Bachelor of Science Honors Program degree in Biochemistry and Molecular Biology at the University of Richmond (U of R) in Virginia, achieving Dean’s Honor List all four years of his undergraduate career. He went to Eastern Virginia Medical School (EVMS) to earn his medical doctorate, receiving honors marks in internal medicine training.

Dr. Simmelink completed his internship and residency in internal medicine at Carolinas Medical Center (CMC) in Charlotte, North Carolina, where he was selected to stay for his three-year Fellowship in Gastroenterology and Hepatology.

During the fellowship, Dr. Simmelink gained extensive experience managing complex liver and inflammatory bowel diseases through the CMC liver transplant and inflammatory bowel disease programs. Additionally, he gained insightful experience in motility issues, earning certification from the American Neurogastroenterology and Motility Society (ANMS).

While in his internal medicine residency and gastroenterology fellowship, Dr. Simmelink exhibited an interest in improving patient safety. He also championed increasing population-wide colorectal cancer and hepatitis-C screening rates through quality improvement projects.

Dr. Simmelink is clinically interested in managing a wide variety of digestive diseases, including, but not limited to, inflammatory bowel disease and immune-mediated bowel disorders, Crohn’s disease, ulcerative colitis, Celiac disease, medication-induced conditions, liver disease (alcohol and obesity-induced liver disease), Wilson’s disease, autoimmune hepatitis, hemochromatosis, viral hepatitis, disorders of the gut-brain interaction, IBS, dyspepsia, heartburn and GERD, peptic ulcer disease, constipation, diarrhea, and Barrett’s esophagus.

He is skilled in many GI procedures, including upper endoscopy (EGD), esophageal dilation, Barrett’s esophagus ablation & management, colonoscopy, colorectal cancer screening, colon polyp removal, endoscopic mucosal resection (EMR), endoscopic management of inflammatory bowel disease, enteral access (PEG tube placement), and video capsule endoscopy.

He is a member of the American Society for Gastrointestinal Endoscopy (ASGE), the American Gastroenterological Association (AGA), the American College of Gastroenterology (ACG), and the American College of Physicians (ACP).

Serving his community has always been an integral part of his life, exemplified in achieving the rank of Eagle Scout in the Boy Scouts of America, joining the Alpha Phi Omega national service fraternity in college, to helping out with local support groups for Huntington’s disease and aiding underserved patients through Beyond Clinic Walls during his medical school career. 

In his spare time, Dr. Simmelink enjoys landscaping and remodeling homes, playing the piano, enjoying water sports, including swimming & kayaking, experimenting with new recipes from different cultures, and mastering the grill.

Board-Certified Internal Medicine Physician
Founder & CEO – Midwest Wellness & Wound Care

Dr. Kinya Kamau, MD, is a Board-Certified Internal Medicine physician and the Founder and Chief Executive Officer of Midwest Wellness & Wound Care, a physician-directed multi-state medical organization specializing in mobile wound care, chronic disease management, and telemedicine services.

With more than 20 years of clinical experience, Dr. Kamau has dedicated her career to improving outcomes for medically complex patients through evidence-based care delivered directly at the bedside. Her work focuses on patients living with chronic wounds, diabetes, vascular disease, mobility limitations, and other conditions that interfere with healing.

Dr. Kamau leads a physician-directed wound care program that delivers advanced bedside wound management in skilled nursing facilities, assisted living communities, rehabilitation centers, and private residences across multiple states. Her model integrates Internal Medicine expertise, regulatory compliance, and structured clinical workflows to improve healing outcomes while supporting healthcare facilities with Medicare-aligned documentation.

Her mission is simple but powerful: provide compassionate, evidence-driven care that restores health, mobility, and dignity for patients living with chronic wounds.

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Professional Credentials

Dr. Kamau brings more than two decades of medical experience in Internal Medicine and complex chronic disease management. Her clinical background includes extensive experience caring for medically fragile adults in hospital, outpatient, and post-acute care settings.

She has dedicated much of her career to treating patients with:

• chronic wounds

• diabetes

• vascular disease

• renal dysfunction

• mobility limitations

These conditions frequently impair wound healing and require a comprehensive medical approach.

Dr. Kamau earned her Doctor of Medicine degree from the University of Nairobi, where she developed a strong academic foundation in internal medicine, complex disease management, and patient-centered clinical care.

She later completed her Internal Medicine residency at the University of Oklahoma, where she refined her expertise in diagnosing and managing complex medical conditions affecting adult patients.

Following residency, Dr. Kamau completed advanced fellowship training in nephrology, expanding her expertise in:

• kidney disease

• hypertension

• electrolyte disorders

• metabolic conditions

• systemic illnesses that influence wound healing

Dr. Kamau currently maintains active medical licenses in multiple U.S. states, allowing her to oversee physician-directed wound care services across diverse healthcare environments including:

• skilled nursing facilities

• assisted living communities

• rehabilitation centers

• private residences

Through Midwest Wellness & Wound Care, she leads a multi-state physician wound care program designed to deliver advanced bedside wound treatment while maintaining strict alignment with Medicare documentation standards and regulatory compliance requirements.

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Quick Credentials Summary

Board Certification
Internal Medicine

Medical School
University of Nairobi – Doctor of Medicine

Residency Training
Internal Medicine – University of Oklahoma

Fellowship Training
Nephrology- University of Oklahoma

Clinical Experience
20+ years in Internal Medicine and complex chronic disease management

Clinical Focus

• Mobile wound care

• Chronic wound management

• Diabetic wound care

• Pressure injury management

• Post-acute care medicine

Practice Model

Physician-directed mobile wound care and telemedicine services

Practice Leadership

Founder & CEO – Midwest Wellness & Wound Care

Practice Settings

• Skilled nursing facilities

• Assisted living communities

• Rehabilitation centers

• Private residences

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Medical Education and Training

Dr. Kamau earned her Doctor of Medicine degree from the University of Nairobi, where she developed a strong foundation in internal medicine, complex disease management, and patient-centered clinical care.

She later completed her Internal Medicine residency training at the University of Oklahoma, where she further refined her expertise in diagnosing and managing complex medical conditions affecting adult patients.

Internal Medicine training provides a comprehensive understanding of the interconnected systems that influence healing. Conditions such as:

• diabetes

• cardiovascular disease

• kidney dysfunction

• malnutrition

• vascular compromise

frequently contribute to delayed wound healing.

Dr. Kamau’s training enables her to evaluate wounds within the full medical context of the patient rather than focusing solely on the skin surface. This systemic perspective forms the foundation of her approach to chronic wound management.

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Board-Certified Internal Medicine Expertise

As a Board-Certified Internal Medicine physician, Dr. Kamau approaches wound care through the lens of whole-patient medicine.

Chronic wounds rarely exist in isolation. They often develop because of underlying physiologic dysfunction that impairs tissue repair.

Common systemic contributors include:

• diabetes and poor glycemic control

• peripheral vascular disease

• venous insufficiency

• cardiac disease

• renal impairment

• malnutrition

• neuropathy

• immobility

• medication side effects

• chronic inflammation

By addressing these root contributors alongside local wound treatment, Dr. Kamau’s approach improves healing potential and reduces the risk of complications such as infection, hospitalization, or limb loss.

This integrated medical strategy is a key differentiator between physician-directed wound care and fragmented treatment models that rely solely on topical wound management.

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Founder of Midwest Wellness & Wound Care

Dr. Kamau founded Midwest Wellness & Wound Care to address a critical gap in post-acute medicine.

Many patients with chronic wounds live in environments where transportation to specialty wound clinics is difficult or unsafe. Skilled nursing residents, assisted living residents, and homebound individuals often experience delays in wound evaluation simply because they cannot easily travel to outpatient facilities.

The mobile wound care model solves this problem by bringing advanced wound care directly to the patient.

Under Dr. Kamau’s leadership, Midwest Wellness & Wound Care provides physician-directed bedside wound care services that allow patients to receive specialized treatment in the environment where they live.

This model improves:

• access to care

• early wound detection

• treatment timeliness

• interdisciplinary communication

• patient comfort and safety

It also allows physicians to observe real-world factors affecting wound healing, including mobility limitations, pressure exposure, nutritional status, and environmental risks.

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Multi-State Medical Practice

Dr. Kamau currently holds active medical licenses in numerous states across the United States, allowing her organization to expand access to physician-directed wound care services across diverse regions.

States where Dr. Kamau is licensed in over 40 states. 

Operating across multiple states requires a deep understanding of regulatory frameworks, payer policies, and state medical board requirements.

Dr. Kamau’s leadership includes oversight of:

• multi-state physician licensing

• Medicare credentialing

• payer enrollment

• corporate practice of medicine compliance

• telemedicine regulations

• Medicare Administrative Contractor policy alignment

This regulatory fluency allows Midwest Wellness & Wound Care to expand safely while maintaining strict compliance with healthcare laws and reimbursement guidelines.

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Mobile Wound Care: Bringing Advanced Treatment to the Bedside

Mobile wound care represents a major advancement in how chronic wounds are treated.

Traditional wound care models rely heavily on outpatient clinics or hospital-based services, which can create barriers for medically fragile patients.

Dr. Kamau’s physician-directed mobile wound care model places advanced wound care directly at the bedside.

Patients may receive care in:

• skilled nursing facilities

• assisted living communities

• rehabilitation centers

• long-term care facilities

• private residences

By eliminating transportation barriers, patients receive faster evaluations and more consistent follow-up.

Early intervention is one of the most important factors influencing wound healing outcomes.

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Chronic Wounds Treated

Dr. Kamau’s clinical program manages a wide range of wound conditions commonly seen in post-acute medicine.

These include:

Diabetic Foot Ulcers
Neuropathy, vascular compromise, and metabolic dysfunction contribute to tissue breakdown.

Pressure Injuries
Prolonged pressure restricts blood flow and damages tissue.

Venous Leg Ulcers
Venous insufficiency and edema lead to chronic lower extremity wounds.

Arterial Ulcers
Poor arterial circulation limits oxygen delivery to tissues.

Post-Surgical Wounds
Incisions may fail to heal due to infection or systemic illness.

Traumatic Wounds
Skin tears and injuries are common in elderly populations.

Chronic Non-Healing Wounds
Persistent wounds require a comprehensive medical approach.

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Structured Wound Evaluation

Every wound evaluation follows a standardized clinical protocol that includes:

• precise wound location documentation

• wound length, width, and depth measurement

• tissue type identification

• exudate evaluation

• periwound assessment

• infection surveillance

• perfusion evaluation

• pressure offloading strategies

This structured methodology supports accurate monitoring of wound progression and Medicare-compliant documentation.

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Advanced Wound Treatment Modalities

Treatment plans are tailored to each patient and may include:

• conservative sharp debridement

• antimicrobial dressings

• moisture-balance therapy

• collagen-based wound matrices

• compression therapy

• edema management

• negative pressure wound therapy

• cellular and tissue-based products when appropriate

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Medicare-Aligned Documentation

Providing wound care in long-term care environments requires careful adherence to Medicare documentation standards.

Dr. Kamau’s program emphasizes:

• medical necessity documentation

• CPT coding accuracy

• ICD-10 diagnosis specificity

• Local Coverage Determination adherence

• wound progression documentation

• treatment response monitoring

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Telemedicine Services

In addition to mobile wound care, Dr. Kamau oversees telemedicine services that expand access to medical care.

Services may include:

• primary care consultations

• chronic disease follow-up

• medication management

• behavioral health support

• preventive care evaluations

Telehealth allows patients to receive ongoing medical support between in-person visits while maintaining continuity of care.

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Commitment to Patient-Centered Care

At the center of Dr. Kamau’s work is a commitment to improving the lives of patients living with chronic wounds and complex medical conditions.

Frequently Asked Questions About Wound Care Physicians

What does a wound care physician do?

A wound care physician specializes in diagnosing and treating chronic wounds such as diabetic foot ulcers, pressure injuries, venous leg ulcers, arterial ulcers, and non-healing surgical wounds. They provide advanced wound treatments, debridement procedures, and medical oversight to support healing.

When should someone see a wound care physician?

Patients should see a wound care physician when a wound does not improve after several weeks of standard treatment, or when conditions such as diabetes, vascular disease, or immobility increase the risk of delayed healing.

Can wound care physicians treat patients in nursing facilities?

Yes. Many wound care physicians provide bedside services in skilled nursing facilities, assisted living communities, rehabilitation centers, and private homes to ensure patients receive timely evaluation and treatment.

W. Colin Gallahan, MD is a board-certified Gastroenterologist at Richmond Gastroenterology Associates. Dr. Gallahan sees patients at the Westchester office in Midlothian, Virginia.

He received his undergraduate degree and medical degree from the University of Virginia (UVA). After graduating from medical school, Dr. Gallahan completed his internship and residency in internal medicine at Duke University Medical Center. He completed his fellowship in gastroenterology at Wake Forest University Baptist Medical Center (WFU).

After completing his GI fellowship, he was selected to stay on at WFU to complete an additional year of specialty training in Advanced Endoscopy, with a primary focus on endoscopic ultrasound (EUS). He was fortunate to train with instructors who are nationally recognized experts in Advanced Endoscopy.

Because of his advanced training in endoscopic ultrasound, Dr. Gallahan has a special interest in diagnosing and staging GI cancers and managing diseases of the pancreas. He also cares for patients with a variety of GI disorders, including inflammatory bowel disease (IBD), acid reflux, swallowing disorders, liver disease, and biliary and gallbladder disorders. 

Dr. Gallahan is a strong advocate for colon cancer screening. He is skilled in performing endoscopic ultrasound (EUS), colonoscopy, colon polyp removal, upper endoscopy (EGD), and ERCP.

He is a member of the American College of Gastroenterology (ACG), the American Society for Gastrointestinal Endoscopy (ASGE), and the American Gastroenterological Association (AGA). He also serves the community as a member of the Richmond Academy of Medicine (RAM).

“Taking care of patients is a great privilege and responsibility. I always try to be as thorough as possible, and my goal is to communicate openly and honestly with my patients. I believe patients will ultimately do better if they understand their illness and treatment plan.”

Dr. Gallahan grew up in the Northern Neck of Virginia. He attended Woodberry Forest School before his time in Charlottesville. Dr. Gallahan is married to a native Richmonder and has three children. He and his family regularly attend Hope Church. 

Dr. Gallahan is a huge fan of all sports and avidly follows the Washington Commanders and UVA athletics. He enjoys coaching his children’s sports teams and likes to sneak away to the golf course whenever he can.

Sachit Sharma, MD, is a board-certified gastroenterologist and hepatologist at Richmond Gastroenterology Associates in Richmond, Virginia. Dr. Sharma sees patients at the Midlothian office in N. Chesterfield, Virginia. 

Dr. Sharma's medical career began with an MBBS degree from Manipal College of Medical Sciences in Nepal, where he graduated with honors in 2013, supported by a full scholarship from the Ministry of Education and Sports of the Government of Nepal. His clinical acumen was further honed during his Internal Medicine Residency at John H. Stroger Jr. Hospital of Cook County in Chicago, IL, followed by a tenure as Chief Resident at the University of Toledo, OH. Dr. Sharma then worked as a Hospitalist at Promedica Toledo Hospital before completing his Fellowship in Gastroenterology, Hepatology, and Nutrition at Virginia Commonwealth University in July 2024.

His contributions to the field are substantial, with numerous peer-reviewed publications that address diverse topics such as the efficacy of endoscopic techniques, prognostic markers for hepatocellular carcinoma, and the impact of various interventions on gastrointestinal outcomes. Noteworthy publications include systematic reviews and meta-analyses on endoscopic treatments and prognostic factors, reflecting his expertise and ongoing research efforts.

Dr. Sharma's professional affiliations include memberships in the American College of Gastroenterology (ACG), the American Society for Gastrointestinal Endoscopy (ASGE), and the American Gastroenterological Association (AGA). His commitment to the field is also evidenced by his ABIM Board Certification in Internal Medicine and his active involvement in various national and international medical societies.

Fluent in English, Nepali, Hindi, and Urdu, he brings a diverse linguistic and cultural perspective to his practice. Dr. Sharma's dedication to both clinical excellence and research makes him a valuable asset to the gastroenterology community, continuously working towards improving patient outcomes and advancing medical knowledge.

Dr. Sharma resides in the suburbs of Richmond, VA with his family. 

Drew Simmelink, MD, is a board-certified Gastroenterologist at Richmond Gastroenterology Associates. Dr. Simmelink sees patients primarily at the practice’s Hanover office in Mechanicsville, Virginia, but also takes appointments at the West Creek office in Henrico. 

Dr. Simmelink received his Bachelor of Science Honors Program degree in Biochemistry and Molecular Biology at the University of Richmond (U of R) in Virginia, achieving Dean’s Honor List all four years of his undergraduate career. He went to Eastern Virginia Medical School (EVMS) to earn his medical doctorate, receiving honors marks in internal medicine training.

Dr. Simmelink completed his internship and residency in internal medicine at Carolinas Medical Center (CMC) in Charlotte, North Carolina, where he was selected to stay for his three-year Fellowship in Gastroenterology and Hepatology.

During the fellowship, Dr. Simmelink gained extensive experience managing complex liver and inflammatory bowel diseases through the CMC liver transplant and inflammatory bowel disease programs. Additionally, he gained insightful experience in motility issues, earning certification from the American Neurogastroenterology and Motility Society (ANMS).

While in his internal medicine residency and gastroenterology fellowship, Dr. Simmelink exhibited an interest in improving patient safety. He also championed increasing population-wide colorectal cancer and hepatitis-C screening rates through quality improvement projects.

Dr. Simmelink is clinically interested in managing a wide variety of digestive diseases, including, but not limited to, inflammatory bowel disease and immune-mediated bowel disorders, Crohn’s disease, ulcerative colitis, Celiac disease, medication-induced conditions, liver disease (alcohol and obesity-induced liver disease), Wilson’s disease, autoimmune hepatitis, hemochromatosis, viral hepatitis, disorders of the gut-brain interaction, IBS, dyspepsia, heartburn and GERD, peptic ulcer disease, constipation, diarrhea, and Barrett’s esophagus.

He is skilled in many GI procedures, including upper endoscopy (EGD), esophageal dilation, Barrett’s esophagus ablation & management, colonoscopy, colorectal cancer screening, colon polyp removal, endoscopic mucosal resection (EMR), endoscopic management of inflammatory bowel disease, enteral access (PEG tube placement), and video capsule endoscopy.

He is a member of the American Society for Gastrointestinal Endoscopy (ASGE), the American Gastroenterological Association (AGA), the American College of Gastroenterology (ACG), and the American College of Physicians (ACP).

Serving his community has always been an integral part of his life, exemplified in achieving the rank of Eagle Scout in the Boy Scouts of America, joining the Alpha Phi Omega national service fraternity in college, to helping out with local support groups for Huntington’s disease and aiding underserved patients through Beyond Clinic Walls during his medical school career. 

In his spare time, Dr. Simmelink enjoys landscaping and remodeling homes, playing the piano, enjoying water sports, including swimming & kayaking, experimenting with new recipes from different cultures, and mastering the grill.