Claire Brett, MD
NPI 1861458598 · Anesthesiology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Claire Brett, MD is a Anesthesiology Physician provider in San Francisco, CA (NPI 1861458598).
Provider details
- NPI number
- 1861458598
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G36606 (CA)
Specialties & taxonomies
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
20 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
- 2006-04-21
- Last updated
- 2017-01-31
Frequently asked questions
- What is Claire Brett's NPI number?
- Claire Brett's National Provider Identifier (NPI) is 1861458598, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Claire Brett's specialty?
- Claire Brett is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Claire Brett located?
- Claire Brett's practice location on file with NPPES is 550 16th St Fl Hall5, San Francisco, CA 94143-2549.
- What is Claire Brett's phone number?
- The practice phone number listed in the NPPES registry for Claire Brett is (415) 637-4408.
- Does Claire Brett accept Medicare?
- Claire Brett is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Claire Brett's NPI active?
- Yes — Claire Brett's NPI (1861458598) is active in the NPPES registry as of the last update on 2017-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.