Diana De Guzman
NPI 1699636225 · Marriage & Family Therapist · San Mateo, CA
Diana De Guzman is a Marriage & Family Therapist provider in San Mateo, CA (NPI 1699636225).
Provider details
- NPI number
- 1699636225
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 119740 (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
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
Mailing address
Registry dates
- Enumerated
- 2025-11-21
- Last updated
- 2025-11-21
- Certified
- 2025-11-21
Frequently asked questions
- What is Diana De Guzman's NPI number?
- Diana De Guzman's National Provider Identifier (NPI) is 1699636225, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana De Guzman's specialty?
- Diana De Guzman is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Diana De Guzman located?
- Diana De Guzman's practice location on file with NPPES is 650 N Delaware St, San Mateo, CA 94401-1732.
- What is Diana De Guzman's phone number?
- The practice phone number listed in the NPPES registry for Diana De Guzman is (650) 558-2376.
- Is Diana De Guzman's NPI active?
- Yes — Diana De Guzman's NPI (1699636225) is active in the NPPES registry as of the last update on 2025-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.