William Fung
NPI 1306657358 · Physician Assistant · Claremont, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Fung is a Physician Assistant provider in Claremont, CA (NPI 1306657358).
Provider details
- NPI number
- 1306657358
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-01-17
- Last updated
- 2025-01-17
- Certified
- 2025-01-17
Frequently asked questions
- What is William Fung's NPI number?
- William Fung's National Provider Identifier (NPI) is 1306657358, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Fung's specialty?
- William Fung is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Fung located?
- William Fung's practice location on file with NPPES is 535 Watson Dr, Claremont, CA 91711-4817.
- What is William Fung's phone number?
- The practice phone number listed in the NPPES registry for William Fung is (408) 533-2710.
- Does William Fung accept Medicare?
- William Fung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Fung's NPI active?
- Yes — William Fung's NPI (1306657358) is active in the NPPES registry as of the last update on 2025-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.