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Gastroenterologists who accept Medicare in Anaheim, CA
CMS lists 26 clinicians in this specialty with a practice address in Anaheim. Accept Medicare assignment (the Medicare-approved amount as full payment): 24. Offer telehealth: 8.
Typical amounts Medicare approves in ZIP 92801 (2024 Medicare rates, the latest CMS has published): a new-patient visit $142, of which you pay about $36; a follow-up visit $110, of which you pay about $27 — 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.
Walid Ayoub, MD
✓ Accepts Medicare assignmentMIPS score (2024): 89.1/100✓ TelehealthGraduated 1995 · Creighton University School of MedicineMaleDrug and device company payments (2025): $136,245Yun Wang, MD
✓ Accepts Medicare assignmentMIPS score (2024): 89.1/100✓ TelehealthGraduated 2016 · Michigan State University College of Human MedicineFemaleDrug and device company payments (2025): $381Ravindra Alapati, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100Graduated 1981MaleDrug and device company payments (2025): $24Syam P. Gaddam, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100Graduated 1981MaleDrug and device company payments (2025): $1,542Brian P. Riff, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 2009 · Jefferson Medical College of Thomas Jefferson UniversityMaleDrug and device company payments (2025): $18,072Dennis S. Riff, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100✓ TelehealthGraduated 1971 · Jefferson Medical College of Thomas Jefferson UniversityMaleDrug and device company payments (2025): $2,205Jason S. Yip, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100Graduated 2005 · University of Washington School of MedicineMaleDrug and device company payments (2025): $281Sajni A. Amin, MD
✓ Accepts Medicare assignmentGraduated 2020FemaleDrug and device company payments (2025): $738Joshua P. Beirne, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2003 · University of Texas Southwestern Medical School at DallasMaleDrug and device company payments (2025): $432Amit Bhanvadia, MD
✓ Accepts Medicare assignmentGraduated 2012MaleDrug and device company payments (2025): $627Paul Chang, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2009MaleDanh Dan, MD
✓ Accepts Medicare assignmentGraduated 2008 · Medical College of WisconsinMaleOther offices in Anaheim: 2Bassem G. Elgohary, MD
✓ Accepts Medicare assignmentGraduated 2002 · University of Wisconsin School of MedicineMaleOther offices in Anaheim: 2Drug and device company payments (2025): $153Andrew Q. Giap, MD
✓ Accepts Medicare assignmentGraduated 1994 · University of California, Irvine, California College of MedicineMaleOther offices in Anaheim: 2Drug and device company payments (2025): $116Tahmina S. Haq, MD
✓ Accepts Medicare assignmentGraduated 2005FemaleDrug and device company payments (2025): $263Syeda S. Husain, MD
✓ Accepts Medicare assignmentGraduated 1996 · George Washington University School of MedicineFemaleOther offices in Anaheim: 2Thomas J. Konturek, MD
✓ Accepts Medicare assignmentGraduated 2014MaleDrug and device company payments (2025): $203Kevin D. Kuettel, MD
✓ Accepts Medicare assignmentGraduated 1983MaleDrug and device company payments (2025): $1,254Sajen J. Mathews, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1986MaleDrug and device company payments (2025): $2,430Bret N. Namihas, MD
✓ Accepts Medicare assignmentGraduated 1987MaleDrug and device company payments (2025): $180Jenny C. Risman, MD
✓ Accepts Medicare assignmentGraduated 2009 · Boston University School of MedicineFemaleOther offices in Anaheim: 2Kavita Singh, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2004 · Saint Louis University School of MedicineFemaleDrug and device company payments (2025): $1,695Erica St Lawrence, MD
✓ Accepts Medicare assignmentGraduated 2019FemaleDrug and device company payments (2025): $1,210Dick M. Yip, MD
✓ Accepts Medicare assignmentGraduated 1980 · University of Illinois College of Med (chi/peor/rock/chm-Urb)MaleDrug and device company payments (2025): $756Ikponmwosa Enofe, MD
May accept assignmentMIPS score (2024): 79.4/100Graduated 2011MaleDrug and device company payments (2025): $1,799Ambika Bali, MD
May accept assignmentGraduated 1974FemaleDrug and device company payments (2025): $488
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 Anaheim
- Primary care doctors746
- Geriatricians3
- Nurse practitioners206
- Cardiologists43
- Dermatologists34
- Orthopedic surgeons49
- Neurologists32
- Ophthalmologists42
- Optometrists102
- Podiatrists37
- Urologists21
- Pulmonologists17
- Nephrologists9
- Endocrinologists16
- Rheumatologists9
- ENT doctors24
- Oncologists36
- Psychiatrists46
- Psychologists6
- Therapists and counselors58
- Physical therapists109
- Occupational therapists22
- Speech therapists12
- Audiologists3
- Chiropractors14
- Gynecologists47
- General surgeons36
- Vascular surgeons8
- Pain management doctors4
- Physiatrists17
- Allergists5
- Neurosurgeons10
- Infectious disease doctors7
Other care in Anaheim
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).