Mark Stevens, PH.D
NPI 1740962299 · Clinical Psychologist · Westlake Village, CA
Mark Stevens, PH.D is a Clinical Psychologist provider in Westlake Village, CA (NPI 1740962299).
Provider details
- NPI number
- 1740962299
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY10494 (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
2 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
- 2023-08-03
- Last updated
- 2023-08-03
- Certified
- 2023-08-03
Frequently asked questions
- What is Mark Stevens's NPI number?
- Mark Stevens's National Provider Identifier (NPI) is 1740962299, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Stevens's specialty?
- Mark Stevens is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Stevens located?
- Mark Stevens's practice location on file with NPPES is 32129 Lindero Canyon Rd, Westlake Village, CA 91361-4207.
- What is Mark Stevens's phone number?
- The practice phone number listed in the NPPES registry for Mark Stevens is (818) 486-5307.
- Is Mark Stevens's NPI active?
- Yes — Mark Stevens's NPI (1740962299) is active in the NPPES registry as of the last update on 2023-08-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.