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William Mayeda, M.D.
NPI 1265526230 · Anesthesiology Physician · Greenbrae, CA
William Mayeda, M.D. is a Anesthesiology Physician provider in Greenbrae, CA (NPI 1265526230).
Provider details
- NPI number
- 1265526230
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G48363 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
250 Bon Air Rd
Greenbrae, CA 94904
Phone: (415) 925-7000
Street-level locationGet directions
Mailing address
Po Box 527
Larkspur, CA 94977-0527
Registry dates
- Enumerated
- 2006-10-03
- Last updated
- 2018-06-22
Frequently asked questions
- What is William Mayeda's NPI number?
- William Mayeda's National Provider Identifier (NPI) is 1265526230, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mayeda's specialty?
- William Mayeda is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Mayeda located?
- William Mayeda's practice location on file with NPPES is 250 Bon Air Rd, Greenbrae, CA 94904.
- What is William Mayeda's phone number?
- The practice phone number listed in the NPPES registry for William Mayeda is (415) 925-7000.
- Is William Mayeda's NPI active?
- Yes — William Mayeda's NPI (1265526230) is active in the NPPES registry as of the last update on 2018-06-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.