John Foster, MS, MFT
NPI 1225200538 · Marriage & Family Therapist · Lafayette, CA
John Foster, MS, MFT is a Marriage & Family Therapist provider in Lafayette, CA (NPI 1225200538).
Provider details
- NPI number
- 1225200538
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MS, MFT
- Sex
- Male
- Sole proprietor
- Yes
- License
- 50479 (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
18 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
- 2008-03-26
- Last updated
- 2014-07-08
Frequently asked questions
- What is John Foster's NPI number?
- John Foster's National Provider Identifier (NPI) is 1225200538, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Foster's specialty?
- John Foster is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is John Foster located?
- John Foster's practice location on file with NPPES is 3468 Mt Diablo Blvd, Lafayette, CA 94549-3957.
- What is John Foster's phone number?
- The practice phone number listed in the NPPES registry for John Foster is (925) 566-4487.
- Is John Foster's NPI active?
- Yes — John Foster's NPI (1225200538) is active in the NPPES registry as of the last update on 2014-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.