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Gastroenterologists who accept Medicare in Greenville, PA
CMS lists 11 clinicians in this specialty with a practice address in Greenville. Accept Medicare assignment (the Medicare-approved amount as full payment): 11. Offer telehealth: 7.
Typical amounts Medicare approves in ZIP 16125 (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.
Jennifer S. Chennat, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.9/100Graduated 2001 · Jefferson Medical College of Thomas Jefferson UniversityFemaleOther offices in Greenville: 1Drug and device company payments (2025): $23Kenneth E. Fasanella, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.9/100✓ TelehealthGraduated 2001 · University of Virginia School of MedicineMaleOther offices in Greenville: 1Asif Khalid, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.9/100✓ TelehealthGraduated 1993MaleOther offices in Greenville: 1Vladimir Lamm, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.9/100✓ TelehealthGraduated 2017 · University of Pittsburgh School of MedicineMaleOther offices in Greenville: 1Drug and device company payments (2025): $194Kevin M. McGrath, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.9/100✓ TelehealthGraduated 1992 · Jefferson Medical College of Thomas Jefferson UniversityMaleOther offices in Greenville: 1Drug and device company payments (2025): $104Sharon L. Miller, DO
✓ Accepts Medicare assignmentMIPS score (2024): 80.9/100Graduated 1986 · Des Moines University of Osteopathic Medicine and Health SciencesFemaleOther offices in Greenville: 1Drug and device company payments (2025): $479Harkirat Singh, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.9/100✓ TelehealthGraduated 2010MaleOther offices in Greenville: 1Adam Slivka, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.9/100✓ TelehealthGraduated 1988 · Icahn School of Medicine at Mount SinaiMaleOther offices in Greenville: 1Drug and device company payments (2025): $196Muhammad Haseeb, MD
✓ Accepts Medicare assignmentGraduated 2012MaleOther offices in Greenville: 1Drug and device company payments (2025): $102Amy E. Hosmer, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2010 · Temple University School of MedicineFemaleOther offices in Greenville: 1Drug and device company payments (2025): $27,010Mark A. Smith, MD
✓ Accepts Medicare assignmentGraduated 1986 · University of Maryland School of MedicineMaleOther offices in Greenville: 1Drug and device company payments (2025): $85
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 Greenville
- Primary care doctors24
- Nurse practitioners16
- Cardiologists5
- Neurologists8
- Podiatrists3
- Pulmonologists11
- Psychiatrists4
- Therapists and counselors3
- Chiropractors5
- Infectious disease doctors7
Other care in Greenville
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).