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Gastroenterologists who accept Medicare in Happy Valley, OR
CMS lists 14 clinicians in this specialty with a practice address in Happy Valley. Accept Medicare assignment (the Medicare-approved amount as full payment): 14. Offer telehealth: 13.
Typical amounts Medicare approves in ZIP 97086 (2024 Medicare rates, the latest CMS has published): a new-patient visit $134, of which you pay about $34; a follow-up visit $104, of which you pay about $26 — 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.
Michael G. Phillips, MD
✓ Accepts Medicare assignmentMIPS score (2024): 95.5/100✓ TelehealthGraduated 1986 · Oregon Health Sciences University School of MedicineMaleDrug and device company payments (2025): $161Gennadiy Bakis, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2002 · Albany Medical College of Union UniversityMaleDrug and device company payments (2025): $129Sidharth S. Bhardwaj, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1999 · Northeastern Ohio University College of MedicineMaleDrug and device company payments (2025): $56Debbie F. Cheng, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2015 · University of Michigan Medical SchoolFemaleDrug and device company payments (2025): $26Kenneth D. Flora, MD
✓ Accepts Medicare assignmentGraduated 1988 · Oregon Health Sciences University School of MedicineMaleDrug and device company payments (2025): $25Ian B. Holmes, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2014MaleDrug and device company payments (2025): $575Tiffany L. Lambrou, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2016 · Florida State University College of MedicineFemaleThienluong Domi Le, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2008 · Oregon Health Sciences University School of MedicineFemaleNavroop K. Nagra, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2012MaleDrug and device company payments (2025): $125James K. Regan, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1991 · Oregon Health Sciences University School of MedicineMaleDrug and device company payments (2025): $152Ajay Singhvi, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2013 · Northwestern University Feinberg Medical SchoolMaleDrug and device company payments (2025): $144Lehel Somogyi, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1989MaleDrug and device company payments (2025): $431Branden D. Tarlow, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2016 · Oregon Health Sciences University School of MedicineMaleDrug and device company payments (2025): $180Jennifer Yeh, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2016 · Johns Hopkins University School of MedicineFemaleDrug and device company payments (2025): $40
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.
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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).