Diana Guest, MFT
NPI 1659506384 · Marriage & Family Therapist · San Diego, CA
Diana Guest, MFT is a Marriage & Family Therapist provider in San Diego, CA (NPI 1659506384).
Provider details
- NPI number
- 1659506384
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MFT
- Sex
- Female
- Sole proprietor
- Yes
- License
- MFC31177 (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
17 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
- 2009-05-26
- Last updated
- 2009-05-26
Frequently asked questions
- What is Diana Guest's NPI number?
- Diana Guest's National Provider Identifier (NPI) is 1659506384, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Guest's specialty?
- Diana Guest is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Diana Guest located?
- Diana Guest's practice location on file with NPPES is 1767 Grand Ave, San Diego, CA 92109-4400.
- What is Diana Guest's phone number?
- The practice phone number listed in the NPPES registry for Diana Guest is (858) 274-1662.
- Is Diana Guest's NPI active?
- Yes — Diana Guest's NPI (1659506384) is active in the NPPES registry as of the last update on 2009-05-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.