Quick answers
- Does Barry Fung accept Medicare assignment?
- Yes. Medicare's clinician data says Barry Fung accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Barry Fung see?
- In 2024, CMS data shows 841 Original Medicare patients and 6,772 services for Barry Fung. This counts Original Medicare only and measures volume, not quality.
- What is Barry Fung's NPI number?
- 1225079205. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Barry Fung, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 841 |
|---|---|
| Services billed to Medicare | 6,772 |
| Different services or procedures | 42 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient problem focused exam of visual system (92012)1,732 services
- Extended exam of the back part of the eye with retinal drawing (92201)572 services
- Imaging of optic nerve (92133)564 services
- Imaging of retina (92134)561 services
- Exam of visual field with extended testing (92083)551 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Diabetes53%
- Arthritis30%
- Osteoporosis26%
- Chronic kidney disease24%
Practice locations
Addresses where Barry Fung is enrolled with Medicare (CMS data updated October 2, 2026).
- 2449 S King RdSan Jose, CA 95122 (408) 238‑1978
- 4906 El Camino Real B, The Eye Institute of Silicon ValleyLos Altos, CA 94022 (650) 967‑7834
Specialties
- Ophthalmologyprimary
Other ophthalmologists in San Jose
Clinicians with the same Medicare primary specialty in San Jose, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1989 (37 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1225079205 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians