IndividualActive
Mary O'Brien, PHD
NPI 1306850490 · Psychologist · Los Angeles, CA
Mary O'Brien, PHD is a Psychologist provider in Los Angeles, CA (NPI 1306850490).
Provider details
- NPI number
- 1306850490
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- PSY19344 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(91/100 index)
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
300 Medical Plz
Los Angeles, CA 90095-0001
Phone: (310) 825-9989
Street-level locationGet directions
Mailing address
5767 W Century Blvd
Los Angeles, CA 90045-5632
Registry dates
- Enumerated
- 2006-07-27
- Last updated
- 2012-05-01
Frequently asked questions
- What is Mary O'Brien's NPI number?
- Mary O'Brien's National Provider Identifier (NPI) is 1306850490, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary O'Brien's specialty?
- Mary O'Brien is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Mary O'Brien located?
- Mary O'Brien's practice location on file with NPPES is 300 Medical Plz, Los Angeles, CA 90095-0001.
- What is Mary O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Mary O'Brien is (310) 825-9989.
- Is Mary O'Brien's NPI active?
- Yes — Mary O'Brien's NPI (1306850490) is active in the NPPES registry as of the last update on 2012-05-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.