Byron Wittlin, MD
NPI 1154425379 · Psychiatry Physician · San Francisco, CA
Enrolled with Medicare as Order and Referring Only - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Byron Wittlin, MD is a Psychiatry Physician provider in San Francisco, CA (NPI 1154425379).
Provider details
- NPI number
- 1154425379
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G25267 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
Mailing address
Registry dates
- Enumerated
- 2006-09-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is Byron Wittlin's NPI number?
- Byron Wittlin's National Provider Identifier (NPI) is 1154425379, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Byron Wittlin's specialty?
- Byron Wittlin is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Byron Wittlin located?
- Byron Wittlin's practice location on file with NPPES is 4150 Clement St, San Francisco, CA 94121-1545.
- What is Byron Wittlin's phone number?
- The practice phone number listed in the NPPES registry for Byron Wittlin is (415) 551-7350.
- Does Byron Wittlin accept Medicare?
- Byron Wittlin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Byron Wittlin's NPI active?
- Yes — Byron Wittlin's NPI (1154425379) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.