Home › Doctors › New York › Ithaca › Gastroenterologists
Gastroenterologists who accept Medicare in Ithaca, NY
CMS lists 10 clinicians in this specialty with a practice address in Ithaca. Accept Medicare assignment (the Medicare-approved amount as full payment): 10. Offer telehealth: 3.
Typical amounts Medicare approves in ZIP 14850 (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.
Is this your organization or practice? Feature it at the top of this page — $49 for 30 days →
Order: clinicians who accept assignment first, then by MIPS score (highest first), then by last name.
Dennis D. Demeria, MD
✓ Accepts Medicare assignmentMIPS score (2024): 98.6/100Graduated 2001MaleOther offices in Ithaca: 1Tandy M. Agostini, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.3/100Graduated 2017FemaleDrug and device company payments (2025): $65Peter T. Brennan, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.3/100Graduated 1980MaleOther offices in Ithaca: 2Drug and device company payments (2025): $68Caitlin L. Foor-Pessin, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.3/100✓ TelehealthGraduated 2012 · Boston University School of MedicineFemaleDrug and device company payments (2025): $51Jeffrey S. Crespin, MD
✓ Accepts Medicare assignmentGraduated 1993 · Washington University School of MedicineMaleOther offices in Ithaca: 1Drug and device company payments (2025): $4,021Brent D. Lemberg, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2000 · East Tennessee State University Quillen College of MedicineMaleDrug and device company payments (2025): $22Adam R. Riordan, DO
✓ Accepts Medicare assignmentGraduated 2015 · State University of New York at Buffalo School of MedicineMaleDrug and device company payments (2025): $390Paige Robinson, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2018 · Philadelphia College of Osteopathic MedicineFemaleDrug and device company payments (2025): $346Abinash Subedi, MD
✓ Accepts Medicare assignmentGraduated 2016MaleOther offices in Ithaca: 2Biswarup Syam, MD
✓ Accepts Medicare assignmentGraduated 1981MaleOther offices in Ithaca: 1
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 Ithaca
- Primary care doctors77
- Nurse practitioners92
- Cardiologists17
- Dermatologists5
- Orthopedic surgeons12
- Neurologists9
- Ophthalmologists5
- Optometrists12
- Podiatrists4
- Urologists6
- Endocrinologists4
- ENT doctors4
- Oncologists6
- Psychiatrists7
- Psychologists17
- Therapists and counselors73
- Physical therapists15
- Occupational therapists4
- Audiologists4
- Chiropractors15
- Gynecologists7
- General surgeons12
- Vascular surgeons4
- Pain management doctors5
- Allergists7
- Infectious disease doctors5
Other care in Ithaca
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).