William Perry, M.S., LMFT
NPI 1568609899 · Marriage & Family Therapist · Westlake Village, CA
William Perry, M.S., LMFT is a Marriage & Family Therapist provider in Westlake Village, CA (NPI 1568609899).
Provider details
- NPI number
- 1568609899
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- M.S., LMFT
- Sex
- Male
- Sole proprietor
- Yes
- License
- MFC 31552 (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
17 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
- 2009-01-08
- Last updated
- 2009-01-08
Frequently asked questions
- What is William Perry's NPI number?
- William Perry's National Provider Identifier (NPI) is 1568609899, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Perry's specialty?
- William Perry is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is William Perry located?
- William Perry's practice location on file with NPPES is 3625 E Thousand Oaks Blvd, Westlake Village, CA 91362-3626.
- What is William Perry's phone number?
- The practice phone number listed in the NPPES registry for William Perry is (805) 497-3315.
- Is William Perry's NPI active?
- Yes — William Perry's NPI (1568609899) is active in the NPPES registry as of the last update on 2009-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.