What is John Martinsen's NPI number?

John Martinsen's National Provider Identifier (NPI) is 1790277069, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Martinsen's specialty?

John Martinsen is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).

Where is John Martinsen located?

John Martinsen's practice location on file with NPPES is 6833 Stockton Blvd Ste 485, Sacramento, CA 95823-2376.

What is John Martinsen's phone number?

The practice phone number listed in the NPPES registry for John Martinsen is (916) 907-3008.

Is John Martinsen's NPI active?

Yes — John Martinsen's NPI (1790277069) is active in the NPPES registry as of the last update on 2026-04-29.

IndividualActive

John Martinsen

NPI 1790277069 · Clinical Social Worker · Sacramento, CA

John Martinsen is a Clinical Social Worker provider in Sacramento, CA (NPI 1790277069).

Provider details

NPI number: 1790277069
Entity type: Individual
Primary specialty: Clinical Social WorkerBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

Clinical Social WorkerPrimary1041C0700X
Behavioral Health & Social Service Providers

Profile Score

Established profile(61/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
8 yrs in NPPES registry
Profile completeness38% of score
83% 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

6833 Stockton Blvd Ste 485

Sacramento, CA 95823-2376

Phone: (916) 907-3008

Street-level locationGet directions

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Mailing address