Lester Summerfield, PH.D.
NPI 1538611017 · Clinical Psychologist · Westlake Village, CA
Lester Summerfield, PH.D. is a Clinical Psychologist provider in Westlake Village, CA (NPI 1538611017).
Provider details
- NPI number
- 1538611017
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- CA PSY 6055 (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
9 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
- 2016-10-31
- Last updated
- 2025-04-09
- Certified
- 2025-04-09
Frequently asked questions
- What is Lester Summerfield's NPI number?
- Lester Summerfield's National Provider Identifier (NPI) is 1538611017, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lester Summerfield's specialty?
- Lester Summerfield is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Lester Summerfield located?
- Lester Summerfield's practice location on file with NPPES is 4045 E Thousand Oaks Blvd Ste 220, Westlake Village, CA 91362-6977.
- What is Lester Summerfield's phone number?
- The practice phone number listed in the NPPES registry for Lester Summerfield is (805) 496-6992.
- Is Lester Summerfield's NPI active?
- Yes — Lester Summerfield's NPI (1538611017) is active in the NPPES registry as of the last update on 2025-04-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.