James Bayrer, M.D.
NPI 1669601274 · Pediatrics Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Bayrer, M.D. is a Pediatrics Physician provider in San Francisco, CA (NPI 1669601274).
Provider details
- NPI number
- 1669601274
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A108316 (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
16 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
- 2009-07-06
- Last updated
- 2009-07-06
Frequently asked questions
- What is James Bayrer's NPI number?
- James Bayrer's National Provider Identifier (NPI) is 1669601274, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Bayrer's specialty?
- James Bayrer is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is James Bayrer located?
- James Bayrer's practice location on file with NPPES is 505 Parnassus Box 0110, San Francisco, CA 94143-0001.
- What is James Bayrer's phone number?
- The practice phone number listed in the NPPES registry for James Bayrer is (415) 476-6245.
- Does James Bayrer accept Medicare?
- James Bayrer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Bayrer's NPI active?
- Yes — James Bayrer's NPI (1669601274) is active in the NPPES registry as of the last update on 2009-07-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.