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Ophthalmologists who accept Medicare in Castro Valley, CA
CMS lists 7 clinicians in this specialty with a practice address in Castro Valley. Accept Medicare assignment (the Medicare-approved amount as full payment): 7. Offer telehealth: 0.
Typical amounts Medicare approves in ZIP 94546 (2024 Medicare rates, the latest CMS has published): a new-patient visit $154, of which you pay about $38; a follow-up visit $85, of which you pay about $21 — 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.
Tuow D. Ting, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100Graduated 1995 · University of Illinois College of Med (chi/peor/rock/chm-Urb)MaleDrug and device company payments (2025): $143Preema M. Buch, MD
✓ Accepts Medicare assignmentMIPS score (2024): 95.2/100Graduated 2014 · Howard University College of MedicineFemaleDrug and device company payments (2025): $18Stephan Y. Chiu, MD
✓ Accepts Medicare assignmentMIPS score (2024): 95.2/100Graduated 2017 · University of California, Geffen School of MedicineMaleDrug and device company payments (2025): $1,252Robert A. Edelman, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100Graduated 1978 · Temple University School of MedicineMaleNisreen Kothari, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100Graduated 2011 · University of Michigan Medical SchoolFemaleDrug and device company payments (2025): $216Theodore Leng, MD
✓ Accepts Medicare assignmentGraduated 2005 · Stanford University School of MedicineMaleDrug and device company payments (2025): $42,884Karen M. Wai, MD
✓ Accepts Medicare assignmentGraduated 2018FemaleDrug and device company payments (2025): $5,567
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 Castro Valley
- Primary care doctors89
- Nurse practitioners20
- Cardiologists18
- Dermatologists3
- Orthopedic surgeons7
- Neurologists8
- Gastroenterologists7
- Optometrists5
- Podiatrists7
- Urologists5
- Pulmonologists7
- Nephrologists5
- Endocrinologists5
- ENT doctors5
- Oncologists5
- Psychiatrists43
- Therapists and counselors5
- Physical therapists10
- Audiologists3
- Chiropractors10
- Gynecologists16
- General surgeons7
- Pain management doctors3
- Neurosurgeons3
- Infectious disease doctors3
Other care in Castro Valley
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).