Gretchen Mayer, LCSW
NPI 1003043738 · Clinical Social Worker · Westlake Village, CA
Gretchen Mayer, LCSW is a Clinical Social Worker provider in Westlake Village, CA (NPI 1003043738).
Provider details
- NPI number
- 1003043738
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 25601 (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
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
Mailing address
Registry dates
- Enumerated
- 2009-06-20
- Last updated
- 2009-06-20
Frequently asked questions
- What is Gretchen Mayer's NPI number?
- Gretchen Mayer's National Provider Identifier (NPI) is 1003043738, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gretchen Mayer's specialty?
- Gretchen Mayer is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Gretchen Mayer located?
- Gretchen Mayer's practice location on file with NPPES is 5743 Corsa Ave, Westlake Village, CA 91362-4027.
- What is Gretchen Mayer's phone number?
- The practice phone number listed in the NPPES registry for Gretchen Mayer is (805) 497-8053.
- Is Gretchen Mayer's NPI active?
- Yes — Gretchen Mayer's NPI (1003043738) is active in the NPPES registry as of the last update on 2009-06-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.