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Gastroenterologists who accept Medicare in Columbia, MD
CMS lists 45 clinicians in this specialty with a practice address in Columbia. Accept Medicare assignment (the Medicare-approved amount as full payment): 33. Offer telehealth: 39.
Typical amounts Medicare approves in ZIP 21045 (2024 Medicare rates, the latest CMS has published): a new-patient visit $139, of which you pay about $35; a follow-up visit $107, of which you pay about $27 — the 20% coinsurance after the yearly Part B deductible. Clinicians who don't accept assignment can charge up to 15% more; with a Medicare Advantage plan, your plan's copay applies instead.
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Order: clinicians who accept assignment first, then by MIPS score (highest first), then by last name.
Robert M. Byrne
✓ Accepts Medicare assignmentMIPS score (2024): 89.6/100✓ TelehealthGraduated 2013 · Indiana University School of MedicineMaleDrug and device company payments (2025): $365Shaffer Mok, MD
✓ Accepts Medicare assignmentMIPS score (2024): 88/100✓ TelehealthGraduated 2010MaleDrug and device company payments (2025): $9,480Thomas W. Abernathy Jr., MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.6/100✓ TelehealthGraduated 1999 · Drexel University College of MedicineMaleDrug and device company payments (2025): $1,481Biju K. Alex, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.6/100Graduated 2006 · University of Virginia School of MedicineMaleDrug and device company payments (2025): $3,489Richard I. Andorsky, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.6/100Graduated 1983 · George Washington University School of MedicineMaleDrug and device company payments (2025): $102Allen T. Banegura, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.6/100✓ TelehealthGraduated 2000 · University of Maryland School of MedicineMaleDrug and device company payments (2025): $416Kester I. Crosse II, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.6/100✓ TelehealthGraduated 1997 · University of Maryland School of MedicineMaleDrug and device company payments (2025): $1,401Grishma Joy, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.6/100✓ TelehealthGraduated 2003 · Wayne State University School of MedicineFemaleDrug and device company payments (2025): $506Preston Y. Kim, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.6/100✓ TelehealthGraduated 1997 · Virginia Commonwealth University, School of MedicineMaleDrug and device company payments (2025): $3,906Louis Salas, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.6/100✓ TelehealthGraduated 1987 · University Central del Caribe Escuela de MedicinaMaleDrug and device company payments (2025): $148Neeraj Sardana, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.6/100✓ TelehealthGraduated 2006 · Eastern Virginia Medical SchoolMaleDrug and device company payments (2025): $1,065Missale Solomon, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.6/100✓ TelehealthGraduated 2003FemaleDrug and device company payments (2025): $858Urooj Ahmed, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.1/100✓ TelehealthGraduated 1990MaleDrug and device company payments (2025): $1,100Monica Passi, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.5/100✓ TelehealthGraduated 2015 · George Washington University School of MedicineFemaleDrug and device company payments (2025): $698Rudrajit M. Rai, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 1993 · Johns Hopkins University School of MedicineMaleDrug and device company payments (2025): $11,859Farzin Rashti, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 2008 · Howard University College of MedicineMaleDrug and device company payments (2025): $8,856Priti Bijpuria, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2006 · University of Maryland School of MedicineFemaleOther offices in Columbia: 1Drug and device company payments (2025): $751Eduardo Castillo Del Castillo, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2003MaleDrug and device company payments (2025): $2,377Richard M. Chasen, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1977 · Howard University College of MedicineMaleOther offices in Columbia: 1Drug and device company payments (2025): $821Joseph W. Clinton, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2019 · Virginia Commonwealth University, School of MedicineMaleDrug and device company payments (2025): $605Benjamin I. Enav, MD
✓ Accepts Medicare assignmentGraduated 2001MaleLauren Halvorson, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2010 · University of Maryland School of MedicineFemaleDrug and device company payments (2025): $1,136Neil Julie, MD
✓ Accepts Medicare assignmentGraduated 1980MaleDrug and device company payments (2025): $461Sean M. Karp, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1999 · Hahneman Medical College of the PacificMaleOther offices in Columbia: 1Drug and device company payments (2025): $1,456Marvin E. Lawrence, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1996 · Jefferson Medical College of Thomas Jefferson UniversityMaleOther offices in Columbia: 1Drug and device company payments (2025): $1,618Dhruv Lowe, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2011MaleDrug and device company payments (2025): $1,786Alexander Mamunes, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2017 · University of Maryland School of MedicineMaleDrug and device company payments (2025): $2,084Grice McMullan, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2011 · George Washington University School of MedicineMaleDrug and device company payments (2025): $1,042Seema Patil, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2005 · University of Maryland School of MedicineFemaleDrug and device company payments (2025): $1,225Darryn Potosky, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2003 · University of Maryland School of MedicineMaleDrug and device company payments (2025): $20,760Pia Prakash, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2010 · George Washington University School of MedicineFemaleDrug and device company payments (2025): $2,771Sanam D. Razeghi, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2006 · University of Maryland School of MedicineFemaleDrug and device company payments (2025): $922Dabo Xu, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2004MaleDrug and device company payments (2025): $1,536Amy Kim, MD
May accept assignmentMIPS score (2024): 83.3/100✓ TelehealthGraduated 2007FemaleDrug and device company payments (2025): $3,644Omer Shahab, MD
May accept assignmentMIPS score (2024): 80.3/100✓ TelehealthGraduated 2016MaleDrug and device company payments (2025): $2,462Maaza S. Abdi, MD
May accept assignment✓ TelehealthGraduated 1999 · Georgetown University School of MedicineFemaleDrug and device company payments (2025): $678Tsion Abdi, MD
May accept assignment✓ TelehealthGraduated 2010 · Georgetown University School of MedicineFemaleDrug and device company payments (2025): $242Alia S. Dadabhai, MD
May accept assignment✓ TelehealthGraduated 2004FemaleDrug and device company payments (2025): $354Zadid K. Haq, MD
May accept assignment✓ TelehealthGraduated 2019 · Louisiana State University School of Medicine in New OrleansMaleDrug and device company payments (2025): $147Mian Khalid, MD
May accept assignment✓ TelehealthGraduated 2018MaleDrug and device company payments (2025): $55Monika Lammi, MD
May accept assignment✓ TelehealthGraduated 2006 · Tulane University School of MedicineFemaleDrug and device company payments (2025): $844Monica Patel, MD
May accept assignmentGraduated 2020FemaleRaymond Richhart, MD
May accept assignmentGraduated 2020MaleDrug and device company payments (2025): $325Florin Selaru, MD
May accept assignment✓ TelehealthGraduated 1999MaleDrug and device company payments (2025): $526Tinsay A. Woreta, MD
May accept assignment✓ TelehealthGraduated 2007 · Johns Hopkins University School of MedicineFemaleDrug and device company payments (2025): $1,065
Before you book
This list comes from Medicare's enrollment records, not from reviews. Call the office to confirm the clinician is taking new Medicare patients. With Original Medicare, a clinician who accepts assignment can only charge you the Medicare deductible and coinsurance; one who doesn't may charge up to 15% more than the Medicare-approved amount. If you have a Medicare Advantage plan, check that the clinician is in the plan's network.
The MIPS final score (0–100) comes from Medicare's Merit-based Incentive Payment System for 2024. It combines quality measures, cost, improvement activities and use of certified health records, and it sets a payment adjustment. Clinicians who report as a group share the group's score. It is not a patient rating, and many clinicians have no published score.
Payments from drug and medical device companies come from CMS Open Payments (2025 general payments: meals, travel, consulting and speaking fees, gifts and similar), summed for each clinician. Receiving payments is legal and common and does not mean a clinician did anything wrong.
Other specialists in Columbia
- Primary care doctors235
- Nurse practitioners390
- Cardiologists53
- Dermatologists43
- Orthopedic surgeons45
- Neurologists23
- Ophthalmologists20
- Optometrists19
- Podiatrists19
- Urologists22
- Pulmonologists9
- Nephrologists14
- Endocrinologists15
- Rheumatologists8
- ENT doctors12
- Oncologists97
- Psychiatrists38
- Psychologists39
- Therapists and counselors185
- Physical therapists196
- Occupational therapists21
- Speech therapists9
- Audiologists27
- Chiropractors22
- Gynecologists46
- General surgeons20
- Vascular surgeons4
- Pain management doctors8
- Physiatrists13
- Allergists10
- Sleep medicine doctors4
- Dietitians4
- Infectious disease doctors6
Other care in Columbia
Hospitals · Nursing homes · Dialysis centers · Home health agencies · Hospices
Nearby cities
Enrollment, addresses and scores are as reported to CMS and can change. This is not a list of in-network providers for any Medicare Advantage plan, and it is not medical advice. Source: CMS Provider Data Catalog — Doctors and Clinicians National Downloadable File, Clinician MIPS Performance 2024 and Facility Affiliation Data (released Oct 2, 2026).