William Gayowski, MFT
NPI 1558678466 · Marriage & Family Therapist · Santa Rosa, CA
William Gayowski, MFT is a Marriage & Family Therapist provider in Santa Rosa, CA (NPI 1558678466).
Provider details
- NPI number
- 1558678466
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MFT
- Sex
- Male
- Sole proprietor
- No
- License
- 83696 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Counselor101Y00000X
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
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
Additional practice locations (2)
- 2227 Capricorn Way Ste 210Santa Rosa, CA 95407-5486Phone: (707) 565-6672
- 2519 Edgewater DrSanta Rosa, CA 95407-4588Phone: (707) 775-7854
Registry dates
- Enumerated
- 2010-09-13
- Last updated
- 2023-11-22
- Certified
- 2023-11-22
Frequently asked questions
- What is William Gayowski's NPI number?
- William Gayowski's National Provider Identifier (NPI) is 1558678466, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Gayowski's specialty?
- William Gayowski is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is William Gayowski located?
- William Gayowski's practice location on file with NPPES is 2400 County Center Dr # a, Santa Rosa, CA 95403-3004.
- What is William Gayowski's phone number?
- The practice phone number listed in the NPPES registry for William Gayowski is (707) 321-9876.
- Is William Gayowski's NPI active?
- Yes — William Gayowski's NPI (1558678466) is active in the NPPES registry as of the last update on 2023-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.