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Gastroenterologists who accept Medicare in Williamsville, NY
CMS lists 28 clinicians in this specialty with a practice address in Williamsville. Accept Medicare assignment (the Medicare-approved amount as full payment): 28. Offer telehealth: 2.
Typical amounts Medicare approves in ZIP 14221 (2024 Medicare rates, the latest CMS has published): a new-patient visit $126, of which you pay about $32; a follow-up visit $97, of which you pay about $24 — 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.
Abha Rani, MD
✓ Accepts Medicare assignmentMIPS score (2024): 91.3/100Graduated 1987FemaleDrug and device company payments (2025): $397Christopher J. Bartolone, MD
✓ Accepts Medicare assignmentGraduated 1989MaleDrug and device company payments (2025): $640Peter D. Bloom, MD
✓ Accepts Medicare assignmentGraduated 1990 · State University of New York at Buffalo School of MedicineMaleDrug and device company payments (2025): $1,428Randy Cheung, MD
✓ Accepts Medicare assignmentGraduated 2019 · State University of New York at Buffalo School of MedicineMaleDrug and device company payments (2025): $99Peter M. Fields, MD
✓ Accepts Medicare assignmentGraduated 2019 · State University of New York at Buffalo School of MedicineMaleDrug and device company payments (2025): $225David S. Garson, MD
✓ Accepts Medicare assignmentGraduated 1984MaleDrug and device company payments (2025): $1,370Elizabeth Z. Gregory, MD
✓ Accepts Medicare assignmentGraduated 2017 · State University of New York at Buffalo School of MedicineFemaleDrug and device company payments (2025): $3,458Alok D. Gupta, MD
✓ Accepts Medicare assignmentGraduated 1987MaleOther offices in Williamsville: 1Drug and device company payments (2025): $634Cory Higley, MD
✓ Accepts Medicare assignmentGraduated 2007MaleDrug and device company payments (2025): $852Ahmad Kadhim, MD
✓ Accepts Medicare assignmentGraduated 2008MaleDrug and device company payments (2025): $60,582Craig E. Keller, MD
✓ Accepts Medicare assignmentGraduated 2011MaleDrug and device company payments (2025): $619Yogesh Maheshwari, MD
✓ Accepts Medicare assignmentGraduated 1980MaleDrug and device company payments (2025): $898Thomas M. Malikowski, MD
✓ Accepts Medicare assignmentGraduated 2015 · State University of New York at Buffalo School of MedicineMaleDrug and device company payments (2025): $662Antonino Mannone, MD
✓ Accepts Medicare assignmentGraduated 1972MaleDrug and device company payments (2025): $1,154Shahid Mehboob, MD
✓ Accepts Medicare assignmentGraduated 1991MaleDrug and device company payments (2025): $241Naima A. Mian, DO
✓ Accepts Medicare assignmentGraduated 2000 · New York College of Osteo Medicine of New York Institute of TechnologyFemaleDrug and device company payments (2025): $174Jehad A. Miqdadi, MD
✓ Accepts Medicare assignmentGraduated 1987MaleDrug and device company payments (2025): $50Jan M. Novak, MD
✓ Accepts Medicare assignmentGraduated 1970 · State University of New York at Buffalo School of MedicineMaleOther offices in Williamsville: 1Natalie Penn, MD
✓ Accepts Medicare assignmentGraduated 2018FemaleDrug and device company payments (2025): $2,322John Picano, MD
✓ Accepts Medicare assignmentGraduated 2015MaleDrug and device company payments (2025): $1,131Stanley Pietrak, MD
✓ Accepts Medicare assignmentGraduated 1979 · Albany Medical College of Union UniversityMaleDrug and device company payments (2025): $549Ognian Pomakov, MD
✓ Accepts Medicare assignmentGraduated 1990MaleDrug and device company payments (2025): $102Benjamin J. Schaus, DO
✓ Accepts Medicare assignmentGraduated 2004 · New York College of Osteo Medicine of New York Institute of TechnologyMaleDrug and device company payments (2025): $1,830Siddhartha S. Shah, MD
✓ Accepts Medicare assignmentGraduated 1985MaleDrug and device company payments (2025): $162Maya D. Srivastava, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1994 · State University of New York at Buffalo School of MedicineFemaleDrug and device company payments (2025): $365,400Mark S. St Marie, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1976MaleDrug and device company payments (2025): $135Andrew H. Talal, MD
✓ Accepts Medicare assignmentGraduated 1990 · University of Texas Medical School at San AntonioMaleOther offices in Williamsville: 1Drug and device company payments (2025): $20,019Clark Zhang
✓ Accepts Medicare assignmentGraduated 2025MaleDrug and device company payments (2025): $1,564
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 Williamsville
- Primary care doctors159
- Nurse practitioners209
- Cardiologists37
- Dermatologists17
- Orthopedic surgeons21
- Neurologists27
- Ophthalmologists24
- Optometrists22
- Podiatrists5
- Urologists6
- Pulmonologists20
- Nephrologists4
- Endocrinologists10
- Rheumatologists5
- ENT doctors7
- Oncologists10
- Psychiatrists7
- Psychologists19
- Therapists and counselors40
- Physical therapists46
- Occupational therapists13
- Speech therapists3
- Audiologists14
- Chiropractors41
- Gynecologists45
- General surgeons20
- Vascular surgeons6
- Pain management doctors4
- Physiatrists8
- Allergists6
- Dietitians11
- Neurosurgeons14
Other care in Williamsville
Hospitals · Nursing homes · Dialysis centers
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).