Mary Hession, PHD
NPI 1598859779 · Clinical Child & Adolescent Psychologist · Los Angeles, CA
Mary Hession, PHD is a Clinical Child & Adolescent Psychologist provider in Los Angeles, CA (NPI 1598859779).
Provider details
- NPI number
- 1598859779
- Entity type
- Individual
- Primary specialty
- Clinical Child & Adolescent PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- PSY12940 (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
- 2006-10-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mary Hession's NPI number?
- Mary Hession's National Provider Identifier (NPI) is 1598859779, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Hession's specialty?
- Mary Hession is listed in the NPPES registry with a primary specialty of Clinical Child & Adolescent Psychologist (Behavioral Health & Social Service Providers).
- Where is Mary Hession located?
- Mary Hession's practice location on file with NPPES is 4650 W Sunset Blvd, Los Angeles, CA 90027-6062.
- What is Mary Hession's phone number?
- The practice phone number listed in the NPPES registry for Mary Hession is (323) 669-2350.
- Is Mary Hession's NPI active?
- Yes — Mary Hession's NPI (1598859779) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.