Diana Hattar, MFT / PCC
NPI 1588509855 · Marriage & Family Therapist · Irvine, CA
Diana Hattar, MFT / PCC is a Marriage & Family Therapist provider in Irvine, CA (NPI 1588509855).
Provider details
- NPI number
- 1588509855
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MFT / PCC
- Sex
- Female
- Sole proprietor
- Yes
- License
- 151825 (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
- 2026-04-22
- Last updated
- 2026-04-22
- Certified
- 2026-04-22
Frequently asked questions
- What is Diana Hattar's NPI number?
- Diana Hattar's National Provider Identifier (NPI) is 1588509855, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Hattar's specialty?
- Diana Hattar is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Diana Hattar located?
- Diana Hattar's practice location on file with NPPES is 220 Technology Dr Ste 205, Irvine, CA 92618-2424.
- What is Diana Hattar's phone number?
- The practice phone number listed in the NPPES registry for Diana Hattar is (951) 297-7773.
- Is Diana Hattar's NPI active?
- Yes — Diana Hattar's NPI (1588509855) is active in the NPPES registry as of the last update on 2026-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.