William Bernal, M.D.
NPI 1023208261 · Pediatric Rheumatology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Bernal, M.D. is a Pediatric Rheumatology Physician provider in San Francisco, CA (NPI 1023208261).
Provider details
- NPI number
- 1023208261
- Entity type
- Individual
- Primary specialty
- Pediatric Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A95664 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 3401 Civic Center BlvdChildren'S Hospital of Philadelphia - RheumatologyPhiladelphia, PA 19104-4319Phone: (215) 590-2547Fax: (215) 590-4750
Registry dates
- Enumerated
- 2007-07-25
- Last updated
- 2020-02-27
- Certified
- 2020-02-27
Frequently asked questions
- What is William Bernal's NPI number?
- William Bernal's National Provider Identifier (NPI) is 1023208261, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Bernal's specialty?
- William Bernal is listed in the NPPES registry with a primary specialty of Pediatric Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is William Bernal located?
- William Bernal's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143-2204.
- What is William Bernal's phone number?
- The practice phone number listed in the NPPES registry for William Bernal is (415) 476-1000.
- Does William Bernal accept Medicare?
- William Bernal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Bernal's NPI active?
- Yes — William Bernal's NPI (1023208261) is active in the NPPES registry as of the last update on 2020-02-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.