IndividualActive
Warren Walker, PH.D.
NPI 1528286234 · Psychologist · Westlake Village, CA
Warren Walker, PH.D. is a Psychologist provider in Westlake Village, CA (NPI 1528286234).
Provider details
- NPI number
- 1528286234
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY4892 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(89/100 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
699 Hampshire Rd
Ste. 215
Westlake Village, CA 91361-2379
Phone: (805) 497-3155
Fax: (805) 371-4875
Street-level locationGet directions
Mailing address
699 Hampshire Rd
Westlake Village, CA 91361-2379
Registry dates
- Enumerated
- 2007-04-20
- Last updated
- 2013-10-09
Frequently asked questions
- What is Warren Walker's NPI number?
- Warren Walker's National Provider Identifier (NPI) is 1528286234, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Warren Walker's specialty?
- Warren Walker is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Warren Walker located?
- Warren Walker's practice location on file with NPPES is 699 Hampshire Rd, Westlake Village, CA 91361-2379.
- What is Warren Walker's phone number?
- The practice phone number listed in the NPPES registry for Warren Walker is (805) 497-3155.
- Is Warren Walker's NPI active?
- Yes — Warren Walker's NPI (1528286234) is active in the NPPES registry as of the last update on 2013-10-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.