What is Karen Diaz's NPI number?

Karen Diaz's National Provider Identifier (NPI) is 1144386657, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Karen Diaz's specialty?

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

Where is Karen Diaz located?

Karen Diaz's practice location on file with NPPES is 800 Sereno Dr, Vallejo, CA 94589-2411.

What is Karen Diaz's phone number?

The practice phone number listed in the NPPES registry for Karen Diaz is (707) 651-2589.

Is Karen Diaz's NPI active?

Yes — Karen Diaz's NPI (1144386657) is active in the NPPES registry as of the last update on 2024-10-09.

IndividualActive

Karen Diaz, MFT

NPI 1144386657 · Marriage & Family Therapist · Vallejo, CA

Karen Diaz, MFT is a Marriage & Family Therapist provider in Vallejo, CA (NPI 1144386657).

Provider details

NPI number: 1144386657
Entity type: Individual
Primary specialty: Marriage & Family TherapistBehavioral Health & Social Service Providers
Credential: MFT
Sex: Female
Sole proprietor: No
License: MFC 44450 (CA)

Specialties & taxonomies

Marriage & Family TherapistPrimary106H00000XLicense MFC 44450 (CA)
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(90/100 index)

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

800 Sereno Dr

Vallejo, CA 94589-2411

Phone: (707) 651-2589

Street-level locationGet directions

More CA providers

Mailing address

3450 Vista Oaks Dr Apt 120

Martinez, CA 94553-4079

Enumerated: 2006-12-29
Last updated: 2024-10-09
Certified: 2024-10-09

Frequently asked questions

What is Karen Diaz's NPI number?: Karen Diaz's National Provider Identifier (NPI) is 1144386657, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Karen Diaz's specialty?: Karen Diaz is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
Where is Karen Diaz located?: Karen Diaz's practice location on file with NPPES is 800 Sereno Dr, Vallejo, CA 94589-2411.
What is Karen Diaz's phone number?: The practice phone number listed in the NPPES registry for Karen Diaz is (707) 651-2589.
Is Karen Diaz's NPI active?: Yes — Karen Diaz's NPI (1144386657) is active in the NPPES registry as of the last update on 2024-10-09.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.