Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
MS. MARGARET KOSTER, LCSW
Active Sole ProprietorMS. MARGARET KOSTER, LCSW is a Psychologist healthcare provider located in WILLITS, California. NPI 1770609919 is currently active in the NPPES registry. Verify at CMS.
Psychologist · WILLITS, CA
Registration Details
- NPI Number
- 1770609919
- Provider Type
- Individual
- Gender
- Female
- NPI Issued
- Mar 21, 2007 (19.216469646807 yrs)
- Last Updated
- Sep 11, 2025
- Licenses
-
LCS5820 (CA)LCS5820 (CA)
- Sole Proprietor
- Yes
Practice Information
- Address
-
16100 N HIGHWAY 101 SPC 72WILLITS, CA, 954909715Browse CA providers · Browse ZIP 95490
- Phone
- 7074595970
- Primary Specialty
-
Psychologist
103T00000X
- Additional Specialty
- Clinical Social Worker
Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.