Larry Harrison, O.D.
NPI 1366583361 · Optometrist · San Anselmo, CA
Larry Harrison, O.D. is a Optometrist provider in San Anselmo, CA (NPI 1366583361).
Provider details
- NPI number
- 1366583361
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- OD 525 (HI)
Specialties & taxonomies
Eye and Vision Services Providers
Eye and Vision Services Providers
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
- 2007-02-11
- Last updated
- 2012-05-23
Frequently asked questions
- What is Larry Harrison's NPI number?
- Larry Harrison's National Provider Identifier (NPI) is 1366583361, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Larry Harrison's specialty?
- Larry Harrison is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Larry Harrison located?
- Larry Harrison's practice location on file with NPPES is 634 San Anselmo Ave, San Anselmo, CA 94960-2666.
- What is Larry Harrison's phone number?
- The practice phone number listed in the NPPES registry for Larry Harrison is (415) 747-8191.
- Is Larry Harrison's NPI active?
- Yes — Larry Harrison's NPI (1366583361) is active in the NPPES registry as of the last update on 2012-05-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.