Martin Holmen, PH.D.
NPI 1750556189 · Clinical Psychologist · San Luis Obispo, CA
Martin Holmen, PH.D. is a Clinical Psychologist provider in San Luis Obispo, CA (NPI 1750556189).
Provider details
- NPI number
- 1750556189
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY6447 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2008-04-27
- Last updated
- 2008-04-27
Frequently asked questions
- What is Martin Holmen's NPI number?
- Martin Holmen's National Provider Identifier (NPI) is 1750556189, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Martin Holmen's specialty?
- Martin Holmen is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Martin Holmen located?
- Martin Holmen's practice location on file with NPPES is 3295 Rockview Pl, San Luis Obispo, CA 93401-6715.
- What is Martin Holmen's phone number?
- The practice phone number listed in the NPPES registry for Martin Holmen is (805) 549-0846.
- Is Martin Holmen's NPI active?
- Yes — Martin Holmen's NPI (1750556189) is active in the NPPES registry as of the last update on 2008-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.