Bertha Diaz, MFT
NPI 1003023698 · Marriage & Family Therapist · Martinez, CA
Enrolled with Medicare as Practitioner - Marriage and Family Therapist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bertha Diaz, MFT is a Marriage & Family Therapist provider in Martinez, CA (NPI 1003023698).
Provider details
- NPI number
- 1003023698
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MFT
- Sex
- Female
- Sole proprietor
- No
- License
- MFC45501 (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
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
Mailing address
Registry dates
- Enumerated
- 2007-05-16
- Last updated
- 2010-11-15
Frequently asked questions
- What is Bertha Diaz's NPI number?
- Bertha Diaz's National Provider Identifier (NPI) is 1003023698, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bertha Diaz's specialty?
- Bertha Diaz is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Bertha Diaz located?
- Bertha Diaz's practice location on file with NPPES is 1340 Arnold Dr Ste 200, Martinez, CA 94553-4189.
- What is Bertha Diaz's phone number?
- The practice phone number listed in the NPPES registry for Bertha Diaz is (925) 957-5150.
- Does Bertha Diaz accept Medicare?
- Bertha Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bertha Diaz's NPI active?
- Yes — Bertha Diaz's NPI (1003023698) is active in the NPPES registry as of the last update on 2010-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.