IndividualActive
William Byerley, M.D.
NPI 1730490418 · Psychiatry Physician · San Francisco, CA
William Byerley, M.D. is a Psychiatry Physician provider in San Francisco, CA (NPI 1730490418).
Provider details
- NPI number
- 1730490418
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- C41578 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(83/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% 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
401 Parnassus Ave
San Francisco, CA 94143-2211
Phone: (415) 476-7432
Fax: (415) 476-7320
Street-level locationGet directions
Mailing address
401 Parnassus Ave
San Francisco, CA 94143-2211
Registry dates
- Enumerated
- 2010-06-28
- Last updated
- 2010-09-17
Frequently asked questions
- What is William Byerley's NPI number?
- William Byerley's National Provider Identifier (NPI) is 1730490418, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Byerley's specialty?
- William Byerley is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is William Byerley located?
- William Byerley's practice location on file with NPPES is 401 Parnassus Ave, San Francisco, CA 94143-2211.
- What is William Byerley's phone number?
- The practice phone number listed in the NPPES registry for William Byerley is (415) 476-7432.
- Is William Byerley's NPI active?
- Yes — William Byerley's NPI (1730490418) is active in the NPPES registry as of the last update on 2010-09-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.