Marian Williams, PH.D.
NPI 1689711202 · Clinical Psychologist · Los Angeles, CA
Marian Williams, PH.D. is a Clinical Psychologist provider in Los Angeles, CA (NPI 1689711202).
Provider details
- NPI number
- 1689711202
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- No
- License
- PSY12787 (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
- 2007-01-31
- Last updated
- 2007-07-08
Frequently asked questions
- What is Marian Williams's NPI number?
- Marian Williams's National Provider Identifier (NPI) is 1689711202, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marian Williams's specialty?
- Marian Williams is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Marian Williams located?
- Marian Williams's practice location on file with NPPES is 4650 W Sunset Blvd, Los Angeles, CA 90027-6062.
- What is Marian Williams's phone number?
- The practice phone number listed in the NPPES registry for Marian Williams is (323) 361-8525.
- Is Marian Williams's NPI active?
- Yes — Marian Williams's NPI (1689711202) 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.