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Gastroenterologists who accept Medicare in Great Neck, NY
CMS lists 20 clinicians in this specialty with a practice address in Great Neck. Accept Medicare assignment (the Medicare-approved amount as full payment): 20. Offer telehealth: 17.
Typical amounts Medicare approves in ZIP 11023 (2024 Medicare rates, the latest CMS has published): a new-patient visit $154, of which you pay about $39; a follow-up visit $118, of which you pay about $29 — 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.
Jan J. Shim, MD
✓ Accepts Medicare assignmentMIPS score (2024): 98.3/100✓ TelehealthGraduated 1991 · Washington University School of MedicineFemaleDrug and device company payments (2025): $20Antonio Costantino, MD
✓ Accepts Medicare assignmentMIPS score (2024): 93.1/100✓ TelehealthGraduated 2015MaleDrug and device company payments (2025): $948Linda A. Lee, MD
✓ Accepts Medicare assignmentMIPS score (2024): 93.1/100✓ TelehealthGraduated 1988 · University of Chicago, Pritzker School of MedicineFemaleDrug and device company payments (2025): $935Rifat Mamun, MD
✓ Accepts Medicare assignmentMIPS score (2024): 93.1/100Graduated 2014 · Albany Medical College of Union UniversityFemaleSeth Miller
✓ Accepts Medicare assignmentMIPS score (2024): 93.1/100Graduated 1980 · Icahn School of Medicine at Mount SinaiMaleDrug and device company payments (2025): $1,284Katharine P. Rooney, MD
✓ Accepts Medicare assignmentMIPS score (2024): 93.1/100✓ TelehealthGraduated 2017 · Northwestern University Feinberg Medical SchoolFemaleKeith S. Sultan, MD
✓ Accepts Medicare assignmentMIPS score (2024): 93.1/100✓ TelehealthGraduated 1994 · State University of New York at Stony Brook, School of MedicineMaleOther offices in Great Neck: 2Drug and device company payments (2025): $3,467Kaveh Zivari, MD
✓ Accepts Medicare assignmentMIPS score (2024): 93.1/100Graduated 2013 · University of California, Davis School of MedicineMaleDrug and device company payments (2025): $1,054Jacqueline Forman, MD
✓ Accepts Medicare assignmentMIPS score (2024): 90.8/100✓ TelehealthGraduated 2013 · State University of New York Downstate Medical CenterFemaleDrug and device company payments (2025): $1,795Chaim Abittan, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 1994MaleDrug and device company payments (2025): $2,565Anthony Celifarco, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 1983MaleDrug and device company payments (2025): $1,687Mordecai A. Dicker, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 1988 · New York University Medical College - NLGMaleDrug and device company payments (2025): $2,711Robert D. Herman, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 1983 · New York University Medical College - NLGMaleDrug and device company payments (2025): $2,668Gina S. Kwak, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 1990 · New York Medical CollegeFemaleDrug and device company payments (2025): $2,190David E. Milkes, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 1996 · University of California, San Diego School of MedicineMaleDrug and device company payments (2025): $2,591Howard M. Rattner, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 1982 · State University of New York Downstate Medical CenterMaleDrug and device company payments (2025): $2,596Alan F. Sloyer, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 1982 · State University of New York Downstate Medical CenterMaleDrug and device company payments (2025): $2,453Arthur Talansky, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 1977 · Icahn School of Medicine at Mount SinaiMaleDrug and device company payments (2025): $2,559Edna Khodadadian, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1995 · Icahn School of Medicine at Mount SinaiFemaleDrug and device company payments (2025): $144Yonatan M. Ziv, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2016Male
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 Great Neck
- Primary care doctors66
- Nurse practitioners76
- Cardiologists17
- Dermatologists15
- Orthopedic surgeons32
- Neurologists25
- Ophthalmologists25
- Optometrists14
- Podiatrists8
- Nephrologists14
- Endocrinologists21
- Rheumatologists9
- ENT doctors14
- Psychiatrists22
- Psychologists25
- Therapists and counselors37
- Physical therapists212
- Occupational therapists88
- Speech therapists7
- Audiologists4
- Chiropractors7
- Gynecologists22
- General surgeons5
- Vascular surgeons3
- Pain management doctors4
- Physiatrists8
- Allergists5
- Dietitians15
- Neurosurgeons9
Other care in Great Neck
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).