What is Dennis Olsen's NPI number?

Dennis Olsen's National Provider Identifier (NPI) is 1912888538, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Dennis Olsen's specialty?

Dennis Olsen is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).

Where is Dennis Olsen located?

Dennis Olsen's practice location on file with NPPES is 1382 Blue Oaks Blvd Ste 213, Roseville, CA 95678-7052.

What is Dennis Olsen's phone number?

The practice phone number listed in the NPPES registry for Dennis Olsen is (877) 412-8031.

Is Dennis Olsen's NPI active?

Yes — Dennis Olsen's NPI (1912888538) is active in the NPPES registry as of the last update on 2026-02-02.

IndividualActive

Dennis Olsen

NPI 1912888538 · Marriage & Family Therapist · Roseville, CA

Dennis Olsen is a Marriage & Family Therapist provider in Roseville, CA (NPI 1912888538).

Provider details

NPI number: 1912888538
Entity type: Individual
Primary specialty: Marriage & Family TherapistBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: No
License: 130616 (CA)

Specialties & taxonomies

Marriage & Family TherapistPrimary106H00000XLicense 130616 (CA)
Behavioral Health & Social Service Providers

Profile Score

Established profile(54/100 index)

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

Registry tenure38% of score
Under 1 yr in 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

1382 Blue Oaks Blvd Ste 213

Roseville, CA 95678-7052

Phone: (877) 412-8031

Street-level locationGet directions

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Mailing address