Alexei Mosiak, AMFT
NPI 1063209310 · Marriage & Family Therapist · San Francisco, CA
Alexei Mosiak, AMFT is a Marriage & Family Therapist provider in San Francisco, CA (NPI 1063209310).
Provider details
- NPI number
- 1063209310
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- AMFT
- Sex
- Male
- Sole proprietor
- No
- License
- 152161 (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
1 yr 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
- 2025-04-21
- Last updated
- 2025-04-21
- Certified
- 2025-04-21
Frequently asked questions
- What is Alexei Mosiak's NPI number?
- Alexei Mosiak's National Provider Identifier (NPI) is 1063209310, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexei Mosiak's specialty?
- Alexei Mosiak is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Alexei Mosiak located?
- Alexei Mosiak's practice location on file with NPPES is 1782 Church St, San Francisco, CA 94131-2451.
- What is Alexei Mosiak's phone number?
- The practice phone number listed in the NPPES registry for Alexei Mosiak is (415) 851-4046.
- Is Alexei Mosiak's NPI active?
- Yes — Alexei Mosiak's NPI (1063209310) is active in the NPPES registry as of the last update on 2025-04-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.