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Oncologists who accept Medicare in Fontana, CA
CMS lists 6 clinicians in this specialty with a practice address in Fontana. Accept Medicare assignment (the Medicare-approved amount as full payment): 6. Offer telehealth: 4.
Typical amounts Medicare approves in ZIP 92335 (2024 Medicare rates, the latest CMS has published): a new-patient visit $179, of which you pay about $45; a follow-up visit $105, 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.
Thomas H. Fong, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2001 · Washington University School of MedicineMaleDrug and device company payments (2025): $163Hussein Merza, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2007MaleDrug and device company payments (2025): $103Annie Park, MD
✓ Accepts Medicare assignmentGraduated 2015FemaleDrug and device company payments (2025): $83Mihee Park, MD
✓ Accepts Medicare assignmentGraduated 2015 · Ohio State University College of MedicineFemaleDrug and device company payments (2025): $24Anh T. Pham, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2011 · Harvard Medical SchoolMaleDrug and device company payments (2025): $28Cinderella C. Radu, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2004Female
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 Fontana
- Primary care doctors518
- Geriatricians6
- Nurse practitioners121
- Cardiologists12
- Dermatologists12
- Orthopedic surgeons31
- Neurologists17
- Gastroenterologists3
- Ophthalmologists30
- Optometrists56
- Podiatrists27
- Urologists18
- Pulmonologists6
- Nephrologists4
- Endocrinologists3
- ENT doctors24
- Psychiatrists44
- Psychologists5
- Therapists and counselors100
- Physical therapists42
- Occupational therapists8
- Audiologists4
- Gynecologists35
- General surgeons31
- Vascular surgeons7
- Physiatrists21
- Allergists4
- Neurosurgeons7
Other care in Fontana
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).