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Merlin Larson, MD
NPI 1003872805 · Anesthesiology Physician · San Francisco, CA
Merlin Larson, MD is a Anesthesiology Physician provider in San Francisco, CA (NPI 1003872805).
Provider details
- NPI number
- 1003872805
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C30707 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
1600 Divisadero St
San Francisco, CA 94143-0001
Phone: (415) 885-7412
Fax: (415) 885-7284
Street-level locationGet directions
Mailing address
1635 Divisadero St
San Francisco, CA 94143-0001
Registry dates
- Enumerated
- 2006-04-21
- Last updated
- 2008-07-30
Frequently asked questions
- What is Merlin Larson's NPI number?
- Merlin Larson's National Provider Identifier (NPI) is 1003872805, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Merlin Larson's specialty?
- Merlin Larson is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Merlin Larson located?
- Merlin Larson's practice location on file with NPPES is 1600 Divisadero St, San Francisco, CA 94143-0001.
- What is Merlin Larson's phone number?
- The practice phone number listed in the NPPES registry for Merlin Larson is (415) 885-7412.
- Is Merlin Larson's NPI active?
- Yes — Merlin Larson's NPI (1003872805) is active in the NPPES registry as of the last update on 2008-07-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.