Alexander Mayer, LCSW
NPI 1063088185 · Mental Health Counselor · Petaluma, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Mayer, LCSW is a Mental Health Counselor provider in Petaluma, CA (NPI 1063088185).
Provider details
- NPI number
- 1063088185
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 1131040-3501 (UT)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
5 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
- 2021-05-30
- Last updated
- 2022-05-31
- Certified
- 2022-05-31
Frequently asked questions
- What is Alexander Mayer's NPI number?
- Alexander Mayer's National Provider Identifier (NPI) is 1063088185, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Mayer's specialty?
- Alexander Mayer is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Alexander Mayer located?
- Alexander Mayer's practice location on file with NPPES is 1733 Skillman Ln, Petaluma, CA 94952-1250.
- What is Alexander Mayer's phone number?
- The practice phone number listed in the NPPES registry for Alexander Mayer is (510) 910-9675.
- Does Alexander Mayer accept Medicare?
- Alexander Mayer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Mayer's NPI active?
- Yes — Alexander Mayer's NPI (1063088185) is active in the NPPES registry as of the last update on 2022-05-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.