Sohaib Elsayed, MD
Family Physician
3481 N Beauregard St
Alexandria, VA 22302
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215 providers
Availability last updated 07/05/2025
Sohaib Elsayed, MD
Family Physician
3481 N Beauregard St
Alexandria, VA 22302
Catherine Holder, PA-C, is a physician assistant with more than 10 years of experience. At Fairfax Colon & Rectal Surgery, PC. Catherine specializes in diagnosing and treating anal pain, hemorrhoids, abscesses, and other colorectal conditions.
Catherine completed her undergraduate and physician assistant training at Marquette University in Milwaukee, Wisconsin, before returning to her home state of Alaska to specialize in colon and rectal surgery. During the early years of her career, Catherine met her husband, an Air Force pilot, and relocated to Washington state, where she continued to specialize in surgery.
After welcoming their third child, Catherine and her husband were stationed in Illinois. Catherine transitioned into being a stay-at-home parent during this time before having her third child and moving to Northern Virginia. She is thrilled to rejoin the workforce and return to her passion of helping others at Fairfax Colon & Rectal Surgery, PC.
With extensive education, training, and a compassionate demeanor, Catherine hopes to help her patients feel empowered to face their medical and surgical concerns.
Catherine Holder
Physician Assistant
1800 N. Beauregard St
Ste 310
Alexandria, VA 22311
At Fairfax Colon & Rectal Surgery, PC, the board-certified colon and rectal surgeons provide comprehensive colorectal care to adults at six convenient locations in Fairfax, Fair Oaks, Alexandria, Gainesville, Woodbridge, and Lansdowne, Virginia.
Fairfax Colon & Rectal Surgery, PC was founded by Dr. Colvin in 1984 as a one-man endeavor. At that time, colon and rectal surgery was a relatively new concept in Northern Virginia. A lot’s changed in the more than 30 years since, but FCRS has continued to pioneer advances in colon and rectal surgery.
Each practice location features a welcoming, spa-like environment and state-of-the-art diagnostics and surgical equipment. Patients can access same-day treatment for a wide range of anorectal health problems, including hemorrhoids, anal cancer, anal pain, rectal cancer, and fecal incontinence.
Whenever possible, the providers recommend minimally invasive treatments, like laparoscopy or robotic-assisted da Vinci surgery. These procedures allow for smaller incisions, shorter hospital stays, and a reduced risk of infection.
FCRS performs more than 45% of all colorectal procedures in Northern Virginia. The provider’s knowledge and expertise don’t go unnoticed. Many of the surgeons have even been voted “Best Doctors” and “Top Doctors” by Washingtonian and Northern Virginia magazines.
To receive high-quality outpatient surgery at an AAAHC accredited Ambulatory Surgical Center, partner with the fellowship-trained, board-certified colorectal surgeons at Fairfax Colon & Rectal Surgery, PC. Make an appointment by calling the nearest office or clicking the online booking feature today.
Alexandra Minutillo
Physician Assistant
1800 N. Beauregard St
Ste 310
Alexandria, VA 22311
Mai Nguyen, MD
Dermatologist
939 S. Wakefield St. # 201
Arlington, VA 22204
Dr. Chantal Lewis, MD
Family Physician
12191 Clipper Drive
Woodbridge, VA 22192
Melissa Falkowski attended Mount Saint Mary College where she graduated Summa Cum Laude with her Bachelor of Science in Nursing Degree. Melissa has over 15 years of experience in the healthcare field, including Oncology, Preoperative and Postoperative care, and Operating Room experience. After working for 2 years in the Operating Room with Dr. Desai, Melissa joined the team at International Spine, Pain & Performance Center in 2017. As Chief Operating Officer, Melissa is focused on ensuring all clinical standards are met to guarantee that our patients receive optimal and cutting edge care. Melissa partners with the clinicians at ISPPC to execute our mission statement of being leaders in clinical excellence. In her spare time, Melissa enjoys traveling the world with her husband and daughters, and spending time with their family and friends.
Melissa Vincent, PA-C
Physician Assistant
2021 K Street NW
Suite 615
Washington, DC 20006
Ms. Carmen Chatten, FNP-BC
Family Physician
901 N Glebe Rd
5th Floor
Arlington, VA 22203
Capital City Primary and Immediate Care’s approach to family medicine gives you the flexibility to focus on your health when it works for you. Fernando Porter, MD, and the attentive care team partner with you to support your day-to-day health and self-care routines, at the office location in Silver Spring, Maryland. When you’re sick and need care, the team is standing by around the clock. They will be available to you 24/7 virtually or in-person during routine office hours with providers that can help get you on track. They’ll take the hassle and guesswork out of feeling better.
When you need to manage urgent, preventive, or chronic health conditions, we try our very best to make it easy and are there for you at the touch of a button. From healthy eating to vaccinations and preventive physical exams, we provide trusted health care solutions that are driven by compassion, integration of technology, and use of the most up-to-date, evidence-based information.
Capital City Primary and Immediate Care is a proud member of Privia Medical Group - a physician-led, multi-specialty, national medical group.
To make an appointment, call Capital City Primary and Immediate Care or book an appointment online today.
Dr Fernando Porter, MD
Family Physician
1145 19th St NW
Suite 200
Washington, DC 20036
Melissa Falkowski attended Mount Saint Mary College where she graduated Summa Cum Laude with her Bachelor of Science in Nursing Degree. Melissa has over 15 years of experience in the healthcare field, including Oncology, Preoperative and Postoperative care, and Operating Room experience. After working for 2 years in the Operating Room with Dr. Desai, Melissa joined the team at International Spine, Pain & Performance Center in 2017. As Chief Operating Officer, Melissa is focused on ensuring all clinical standards are met to guarantee that our patients receive optimal and cutting edge care. Melissa partners with the clinicians at ISPPC to execute our mission statement of being leaders in clinical excellence. In her spare time, Melissa enjoys traveling the world with her husband and daughters, and spending time with their family and friends.
Melissa Vincent, PA-C
Physician Assistant
1635 North George Mason Drive
Suite 180
Arlington, VA 22205
Tahani Williams, MD
Family Physician
13108 Hunters Ridge Lane
Bowie, MD 20721
Mercy Obamogie, MD
Family Physician
4903 Georgia Ave Nw
Washington, DC 20011
David Schoenfish is a physician assistant Board Certified by the National Commission of Certification of Physician Assistants (NCCPA). David is a member of the American Academy of Physician Assistants, and he is currently licensed to practice by the Virginia Board ofMedicine and the Maryland Board of Physicians.
David graduated summa cum laude with a Bachelor of Science in Exercise Science from the University of Sioux Falls in Sioux Falls, SD, during which he was also a member of the USF men’s cross country and track and field teams. He then received his Master of Physician Assistant Studies degree from the University of Nebraska Medical Center (UNMC) in Omaha, NE. During his physician assistant education, David gained experience in assessing and treating various neurologic conditions including traumatic brain injuries, stroke, polytrauma, Parkinson’s disease, Alzheimer’s disease and other forms of dementia, migraine, and multiple sclerosis in inpatient and outpatient settings while rotating with the UNMC Neurological Sciences department and at Madonna Rehabilitation Hospital in Omaha, NE. He has previous clinical experience working as a patient care technician in the neurology unit at Avera McKennan Hospital and University Health Center in Sioux Falls, SD.
Outside of practicing medicine, David enjoys running, cycling, music, following the Minnesota Twins, and spending time with friends and family.
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David Schoenfish
Physician Assistant
7115 Leesburg Pike
Suite 201
Falls Church, VA 22043
Xinna Yi is a board-certified Family Nurse Practitioner with a Master of Science in Nursing from Wilkes University, which she completed in 2023. She brings a wealth of experience from her work in a family medical clinic and her previous role as a Registered Nurse specializing in cardiology medicine. Before transitioning to nursing, she graduated from medical school in China and gained one and a half years of experience as a gastrointestinal physician at an academic hospital in China.
Xinna is committed to patient-centered care, employing a collaborative, team-based approach to healthcare. She has a passion for continuous learning and teaching. In her personal life, she enjoys spending time with her family, reading, watching movies, and traveling.
Xinna Yi, FNP
Nurse Practitioner
6502 Kenilworth Ave
Suite 100
Riverdale, MD 20737
Colleen Abell is a board-certified Family Nurse Practitioner. She graduated with a Master of Science in Nursing from Georgetown University in 2006. She has practiced as a nurse practitioner for the past sixteen years. Ms. Abell's experience includes working in a family medical clinic, but she spent most of her career providing care for patients recovering from Bariatric and GI surgical/oncology procedures. Prior to becoming a nurse practitioner, Ms. Abell worked as a Registered Nurse in cardiology and emergency medicine.
Colleen joined the Gastro Center of Maryland in 2021 after relocating from the NY/NJ area. She is dedicated to being a great provider and advocate for her patients. Outside of work, Ms. Abell enjoys spending time with her husband and three boys.
Colleen Abell, CRNP
Nurse Practitioner
6502 Kenilworth Ave
Suite 100
Riverdale, MD 20737
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