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Oncologists who accept Medicare in Santa Rosa, CA
CMS lists 16 clinicians in this specialty with a practice address in Santa Rosa. Accept Medicare assignment (the Medicare-approved amount as full payment): 16. Offer telehealth: 13.
Typical amounts Medicare approves in ZIP 95403 (2024 Medicare rates, the latest CMS has published): a new-patient visit $187, of which you pay about $47; 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.
Aditi Choudhry, MD
✓ Accepts Medicare assignmentMIPS score (2024): 90.3/100✓ TelehealthGraduated 2005FemaleDrug and device company payments (2025): $109,751Nicolaj Andersen, MD
✓ Accepts Medicare assignmentGraduated 1997MaleIan C. Anderson, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1988 · Duke University School of MedicineMaleOther offices in Santa Rosa: 2Drug and device company payments (2025): $778Ashok Bapat, MD
✓ Accepts Medicare assignmentGraduated 1973MaleDrug and device company payments (2025): $32Ying Cao, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1999FemaleDrug and device company payments (2025): $31Christopher Di Simone, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1999 · University of California, Davis School of MedicineMaleDrug and device company payments (2025): $1,115Ammara T. Gill, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2002FemaleDrug and device company payments (2025): $15Jarrod P. Holmes, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2000 · Duke University School of MedicineMaleOther offices in Santa Rosa: 2Drug and device company payments (2025): $60,265Christine C. Kaiser, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2002 · University of Minnesota Medical SchoolFemaleZeyad H. Kanaan, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2005MaleSara A. Keck, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2006 · New York Medical CollegeFemaleOther offices in Santa Rosa: 2Drug and device company payments (2025): $48Leroy W. Keiser, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1973 · Stanford University School of MedicineMaleOther offices in Santa Rosa: 2Drug and device company payments (2025): $13,345Wes S. Lee, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1993 · University of California, Geffen School of MedicineMaleOther offices in Santa Rosa: 2Drug and device company payments (2025): $883Yao Yao G. Pollock, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2013 · Johns Hopkins University School of MedicineFemaleOther offices in Santa Rosa: 1Drug and device company payments (2025): $540Vineeth Tatineni, MD
✓ Accepts Medicare assignmentGraduated 2017 · Northeastern Ohio University College of MedicineMaleYing M. Zeng, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1999Female
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 Santa Rosa
- Primary care doctors311
- Geriatricians3
- Nurse practitioners161
- Cardiologists34
- Dermatologists28
- Orthopedic surgeons33
- Neurologists28
- Gastroenterologists22
- Ophthalmologists32
- Optometrists23
- Podiatrists20
- Urologists15
- Pulmonologists8
- Nephrologists10
- Endocrinologists9
- Rheumatologists6
- ENT doctors8
- Psychiatrists75
- Psychologists67
- Therapists and counselors131
- Physical therapists74
- Occupational therapists13
- Speech therapists3
- Chiropractors30
- Gynecologists44
- General surgeons37
- Vascular surgeons10
- Pain management doctors8
- Physiatrists16
- Allergists5
- Dietitians5
- Neurosurgeons6
- Infectious disease doctors7
Other care in Santa Rosa
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).