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William Valdivia-Mairesse, PSY.D
NPI 1245460070 · Psychologist · Los Angeles, CA
William Valdivia-Mairesse, PSY.D is a Psychologist provider in Los Angeles, CA (NPI 1245460070).
Provider details
- NPI number
- 1245460070
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY24368 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(85/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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
12400 Wilshire Blvd
Ste. 230
Los Angeles, CA 90025-1019
Phone: (424) 229-1838
Fax: (310) 399-9358
Approximate (ZIP-level) locationGet directions
Mailing address
12400 Wilshire Blvd
Los Angeles, CA 90025-1019
Registry dates
- Enumerated
- 2009-07-14
- Last updated
- 2013-09-10
Frequently asked questions
- What is William Valdivia-Mairesse's NPI number?
- William Valdivia-Mairesse's National Provider Identifier (NPI) is 1245460070, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Valdivia-Mairesse's specialty?
- William Valdivia-Mairesse is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is William Valdivia-Mairesse located?
- William Valdivia-Mairesse's practice location on file with NPPES is 12400 Wilshire Blvd, Los Angeles, CA 90025-1019.
- What is William Valdivia-Mairesse's phone number?
- The practice phone number listed in the NPPES registry for William Valdivia-Mairesse is (424) 229-1838.
- Is William Valdivia-Mairesse's NPI active?
- Yes — William Valdivia-Mairesse's NPI (1245460070) is active in the NPPES registry as of the last update on 2013-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.