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Gynecologists who accept Medicare in Ontario, CA
CMS lists 15 clinicians in this specialty with a practice address in Ontario. Accept Medicare assignment (the Medicare-approved amount as full payment): 14. Offer telehealth: 0.
Typical amounts Medicare approves in ZIP 91761 (2024 Medicare rates, the latest CMS has published): a new-patient visit $136, of which you pay about $34; a follow-up visit $74, of which you pay about $19 — 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.
Nichole M. Adair, DO
✓ Accepts Medicare assignmentGraduated 2003FemaleLorraine C. Atilano, MD
✓ Accepts Medicare assignmentGraduated 1995 · Harvard Medical SchoolFemaleNora I. Bassiouni, MD
✓ Accepts Medicare assignmentGraduated 2009 · Boston University School of MedicineFemaleDiwata Hope A. Bose, MD
✓ Accepts Medicare assignmentGraduated 1998FemaleHeidi C. Chew, MD
✓ Accepts Medicare assignmentGraduated 2004 · University of California, Irvine, California College of MedicineFemaleDrug and device company payments (2025): $68Simmi Dhaliwal, MD
✓ Accepts Medicare assignmentGraduated 1996 · University of California, Geffen School of MedicineMaleDrug and device company payments (2025): $479Jessica B. Iskander, MD
✓ Accepts Medicare assignmentGraduated 2008 · Loma Linda University School of MedicineFemaleTriet M. Le, DO
✓ Accepts Medicare assignmentGraduated 2013 · Des Moines University of Osteopathic Medicine and Health SciencesMaleDrug and device company payments (2025): $138Sara Noroozkhani, MD
✓ Accepts Medicare assignmentGraduated 2006 · New York Medical CollegeFemaleDrug and device company payments (2025): $1,613Maggie C. Pham, DO
✓ Accepts Medicare assignmentGraduated 2015 · College of Osteo Med of the Pacific at PomonaFemaleDrug and device company payments (2025): $393Kelly G. Smith, MD
✓ Accepts Medicare assignmentGraduated 2017 · Florida International Univ, College of MedicineFemaleDrug and device company payments (2025): $649Gohar Stepanyan, DO
✓ Accepts Medicare assignmentGraduated 2009FemaleMichelle A. Tanzil, DO
✓ Accepts Medicare assignmentGraduated 2013FemaleLorraine A. Walker, MD
✓ Accepts Medicare assignmentGraduated 1981 · Howard University College of MedicineFemaleDrug and device company payments (2025): $26Madli Vahtra, DO
May accept assignmentGraduated 2018 · Midwestern University, Chicago College of Osteopathic MedFemaleDrug and device company payments (2025): $154
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 Ontario
- Primary care doctors190
- Nurse practitioners81
- Cardiologists7
- Orthopedic surgeons20
- Neurologists9
- Ophthalmologists21
- Optometrists16
- Podiatrists19
- Urologists13
- Pulmonologists3
- Nephrologists8
- ENT doctors10
- Oncologists4
- Psychiatrists16
- Psychologists7
- Therapists and counselors50
- Physical therapists20
- General surgeons14
- Vascular surgeons4
- Physiatrists7
- Infectious disease doctors4
Other care in Ontario
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).