Cardiologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Chiropractor providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dentist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dermatologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Family Physician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
OB-GYN providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Ophthalmologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Orthopedic Surgeon providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Pediatrician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Physical Therapist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Podiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Psychiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Alyssa Larimore, CRNP is a certified registered Nurse Practitioner specializing in women's health. She received a Bachelor of Science and a Master of Science degree from the University of Maryland School of Nursing in 2001. She is a certified Nurse Practitioner in Women's Health through the University of Maryland School of Nursing and the National Certification Corporation for Obstetric, Gynecologic and Neonatal Nursing. Alyssa is a busy mother of three young children. She loves spending time with her family and still manages to exercise regularly. As a native of Maryland, Alyssa is a Ravens and Terps fan and enjoys attending their games.
“Overall good experience. The front desk staff were friendly. My nurses Lexi and Juliet were great. Dr Lee seemed very knowledgeable. I was seen in a timely matter and felt that the whole process went well.”
Ms. Alyssa Larimore, MS, CRNP, RN
Nurse Practitioner
3430 Worthington Boulevard
Suite 202
Frederick, MD 21704
4.5(6)
4.5
(4)
Ms. Sandra Wittholz, CRNP OBGYN
Nurse Practitioner 8.1 mi
4.5(4)
3430 Worthington Boulevard
Suite 202
Frederick, MD 21704
Sandra Wittholz is a native of Mt. Pearl, Newfoundland, Canada. She received her Bachelors of Science in Nursing, with honors from the University of Kentucky and her Masters of Science in Nursing with a major in Women's Health from the University of Cincinnati. In 2002 she was awarded her Women's Health Nurse Practitioner Certificate from NCC; she was then licensed as a Certified Registered Nurse Practitioner- OB/GYN through the Maryland Board of Nursing in 2003 when site relocated to the state.
With over twenty years nursing experience, she has focused on Women's Health since 1997. Her previous work experience includes a position at Howard County General Hospital where she was a labor and delivery nurse. She is a member of the National Association of Nurse Practitioners in Women's Health.
Sandra is an avid runner enjoying everything from 5k’s to full and half marathons. She and her husband, Mark, are the proud and busy parents of two children.
“Overall good experience. The front desk staff were friendly. My nurses Lexi and Juliet were great. Dr Lee seemed very knowledgeable. I was seen in a timely matter and felt that the whole process went well.”
Ms. Sandra Wittholz, CRNP OBGYN
Nurse Practitioner
3430 Worthington Boulevard
Suite 202
Frederick, MD 21704
4.5(4)
4.59
(6)
Ms. Leah Oxendine
Nurse Practitioner 8.1 mi
4.59(6)
3430 Worthington Boulevard
Suite 202
Frederick, MD 21704
Leah is a family nurse practitioner with clinical experience in women’s health and pediatrics. Most recently Leah worked at an outpatient pediatric facility in Loudoun County VA. Leah received a Masters of Science in the Family Nurse Practitioner program at Shenandoah University in 2013. Leah received a Bachelors of Science in Nursing from Shepherd University in 2006. Leah was a labor and delivery nurse at Fredrick Memorial Hospital from 2006-2013. In her spare time, Leah enjoys recreational running and spending time with her family.
“Overall good experience. The front desk staff were friendly. My nurses Lexi and Juliet were great. Dr Lee seemed very knowledgeable. I was seen in a timely matter and felt that the whole process went well.”
Ms. Leah Oxendine
Nurse Practitioner
3430 Worthington Boulevard
Suite 202
Frederick, MD 21704
For over 10 years, I have been combining conventional and innovative methods to modern medicine in order to attain unbelievable healing results for my patients. Through active listening and thoughtful questioning, I am able to deliver high-quality care that utilizes the most advancement in medicine. I am particularly interested in health prevention, creating access and delivery of care that is cost-effective and appropriate for the individual.
I graduated in 2009 with honors, where I completed my clinical training in Family Medicine. I am a board certified Family Nurse Practitioner. I was also a clinical faculty at DeSales University for 5 where I had the privilege of helping to mentor the next generation of nurse practitioners.
Alyssa Larimore, CRNP is a certified registered Nurse Practitioner specializing in women's health. She received a Bachelor of Science and a Master of Science degree from the University of Maryland School of Nursing in 2001. She is a certified Nurse Practitioner in Women's Health through the University of Maryland School of Nursing and the National Certification Corporation for Obstetric, Gynecologic and Neonatal Nursing. Alyssa is a busy mother of three young children. She loves spending time with her family and still manages to exercise regularly. As a native of Maryland, Alyssa is a Ravens and Terps fan and enjoys attending their games.
“Overall good experience. The front desk staff were friendly. My nurses Lexi and Juliet were great. Dr Lee seemed very knowledgeable. I was seen in a timely matter and felt that the whole process went well.”
Ms. Alyssa Larimore, MS, CRNP, RN
Nurse Practitioner
504 East Ridgeville Boulevard
Suite 108
Mount Airy, MD 21771
4.5(6)
4.5
(4)
Ms. Sandra Wittholz, CRNP OBGYN
Nurse Practitioner 14.4 mi
4.5(4)
504 East Ridgeville Boulevard
Suite 108
Mount Airy, MD 21771
Sandra Wittholz is a native of Mt. Pearl, Newfoundland, Canada. She received her Bachelors of Science in Nursing, with honors from the University of Kentucky and her Masters of Science in Nursing with a major in Women's Health from the University of Cincinnati. In 2002 she was awarded her Women's Health Nurse Practitioner Certificate from NCC; she was then licensed as a Certified Registered Nurse Practitioner- OB/GYN through the Maryland Board of Nursing in 2003 when site relocated to the state.
With over twenty years nursing experience, she has focused on Women's Health since 1997. Her previous work experience includes a position at Howard County General Hospital where she was a labor and delivery nurse. She is a member of the National Association of Nurse Practitioners in Women's Health.
Sandra is an avid runner enjoying everything from 5k’s to full and half marathons. She and her husband, Mark, are the proud and busy parents of two children.
“Overall good experience. The front desk staff were friendly. My nurses Lexi and Juliet were great. Dr Lee seemed very knowledgeable. I was seen in a timely matter and felt that the whole process went well.”
Ms. Sandra Wittholz, CRNP OBGYN
Nurse Practitioner
504 East Ridgeville Boulevard
Suite 108
Mount Airy, MD 21771
4.5(4)
4.59
(6)
Ms. Leah Oxendine
Nurse Practitioner 14.4 mi
4.59(6)
504 East Ridgeville Boulevard
Suite 108
Mount Airy, MD 21771
Leah is a family nurse practitioner with clinical experience in women’s health and pediatrics. Most recently Leah worked at an outpatient pediatric facility in Loudoun County VA. Leah received a Masters of Science in the Family Nurse Practitioner program at Shenandoah University in 2013. Leah received a Bachelors of Science in Nursing from Shepherd University in 2006. Leah was a labor and delivery nurse at Fredrick Memorial Hospital from 2006-2013. In her spare time, Leah enjoys recreational running and spending time with her family.
“Overall good experience. The front desk staff were friendly. My nurses Lexi and Juliet were great. Dr Lee seemed very knowledgeable. I was seen in a timely matter and felt that the whole process went well.”
Ms. Leah Oxendine
Nurse Practitioner
504 East Ridgeville Boulevard
Suite 108
Mount Airy, MD 21771
For over 10 years, I have been combining conventional and innovative methods to modern medicine in order to attain unbelievable healing results for my patients. Through active listening and thoughtful questioning, I am able to deliver high-quality care that utilizes the most advancement in medicine. I am particularly interested in health prevention, creating access and delivery of care that is cost-effective and appropriate for the individual.
I graduated in 2009 with honors, where I completed my clinical training in Family Medicine. I am a board certified Family Nurse Practitioner. I was also a clinical faculty at DeSales University for 5 where I had the privilege of helping to mentor the next generation of nurse practitioners.
John Watts Haresch, MD is a family medicine physician who joined the practice in 2024. He currently focuses on the care of older adults. He previously served as a Regional Medical Officer with the U.S. Department of State, operated a full-spectrum private practice, and has been medical director of organizations meeting the needs of underserved communities. He completed medical school and family medicine residency in the University of North Carolina system.
Gastro Center of Maryland, with locations in Annapolis, Columbia, Olney, Riverdale, Timonium and Gaithersburg, Maryland, is a medical facility that offers treatment for a variety of gastrointestinal and liver disorders:
Management of a complete range of Gastrointestinal, Liver and Pancreatic disorders, including Acid reflux/GERD, Stomach ulcers, Celiac disease, Irritable bowel syndrome, Colitis & Crohn’s Disease, Liver disease, Hemorrhoids and Constipation, Rectal bleeding etc.
Onsite Ambulatory Surgery Centers with State of the Art HD equipment, GI Genius™GIQuiC participation, and with accreditation from the Accreditation Associates for Abulatory Health Care, Inc. (AAAHC.)
Innovative and cutting edge Diagnostics and Medical Treatment- including Bravo pH Testing, PillCam SB Capsule Endoscopy, STRETTA anti-reflux procedure, Orbera intragastric balloon procedure for weight loss and more.
IBD Infusion Center for Biologic (Remicade, Entyvio, Stelara) and Injectafer infusions.
These are only a few of the many gastrointestinal conditions treated on a regular basis. Patients are offered individualized treatment plans based on state-of-the-art diagnostic tools and techniques that provide them with accurate and complete information. The professional staff at the facility have many years of experience to provide their patients with the most innovative and advanced treatments possible. The Providers focus on a comprehensive and Integrative treatment plan.
Gastro Center of Maryland is currently welcoming new patients, call or book an appointment online today!
For over 10 years, I have been combining conventional and innovative methods to modern medicine in order to attain unbelievable healing results for my patients. Through active listening and thoughtful questioning, I am able to deliver high-quality care that utilizes the most advancement in medicine. I am particularly interested in health prevention, creating access and delivery of care that is cost-effective and appropriate for the individual.
I graduated in 2009 with honors, where I completed my clinical training in Family Medicine. I am a board certified Family Nurse Practitioner. I was also a clinical faculty at DeSales University for 5 where I had the privilege of helping to mentor the next generation of nurse practitioners.
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