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Gastroenterologists who accept Medicare in Concord, MA
CMS lists 7 clinicians in this specialty with a practice address in Concord. Accept Medicare assignment (the Medicare-approved amount as full payment): 7. Offer telehealth: 4.
Typical amounts Medicare approves in ZIP 01742 (2024 Medicare rates, the latest CMS has published): a new-patient visit $144, of which you pay about $36; a follow-up visit $111, of which you pay about $28 — 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.
David Stockwell III, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100✓ TelehealthGraduated 1997MaleOther offices in Concord: 2Drug and device company payments (2025): $62Julio C. Ayala, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1990MaleOther offices in Concord: 2Drug and device company payments (2025): $202Andrea J. Fribush, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1989 · University of Massachusetts Medical SchoolFemaleDrug and device company payments (2025): $719Abhijeet Kashyap, MD
✓ Accepts Medicare assignmentGraduated 2009 · University College of MedicineMaleJennifer Nayor, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2009 · Albert Einstein College of Medicine of Yeshiva UniversityFemaleDrug and device company payments (2025): $484Marvin Ryou, MD
✓ Accepts Medicare assignmentGraduated 2003 · Harvard Medical SchoolMaleDrug and device company payments (2025): $38,792Christopher Thompson, MD
✓ Accepts Medicare assignmentGraduated 1996 · Pennsylvania State University College of MedicineMaleDrug and device company payments (2025): $6,173
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 Concord
- Primary care doctors87
- Nurse practitioners93
- Cardiologists9
- Dermatologists20
- Orthopedic surgeons12
- Ophthalmologists13
- Optometrists5
- Podiatrists3
- Urologists6
- Pulmonologists11
- Nephrologists8
- Endocrinologists3
- ENT doctors3
- Psychiatrists23
- Psychologists14
- Therapists and counselors31
- Physical therapists9
- Speech therapists7
- Chiropractors4
- Gynecologists12
- General surgeons7
Other care in Concord
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).