Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John Martinsen

Individual provider Clinical Social Worker · NPI 1790277069

John Martinsen is a Clinical Social Worker in Sacramento, California. Practices as a sole proprietor. Registered with an NPI since 2018.

In the registry since
2018

Practice location Address checks out

6833 Stockton Blvd Ste 485
Sacramento, CA 95823-2376
Phone: (916) 907-3008
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X

Record details

NPI number1790277069
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedJune 3, 2018
Last updated in NPPESApril 29, 2026
Certification dateApril 29, 2026

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