John Winckler, M.A., MFT
NPI 1023189008 · Marriage & Family Therapist · San Jose, CA
John Winckler, M.A., MFT is a Marriage & Family Therapist provider in San Jose, CA (NPI 1023189008).
Provider details
- NPI number
- 1023189008
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- M.A., MFT
- Sex
- Male
- Sole proprietor
- Yes
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
19 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2006-11-13
- Last updated
- 2008-12-19
Frequently asked questions
- What is John Winckler's NPI number?
- John Winckler's National Provider Identifier (NPI) is 1023189008, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Winckler's specialty?
- John Winckler is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is John Winckler located?
- John Winckler's practice location on file with NPPES is 950 W Julian St, San Jose, CA 95126-2719.
- What is John Winckler's phone number?
- The practice phone number listed in the NPPES registry for John Winckler is (408) 292-9353.
- Is John Winckler's NPI active?
- Yes — John Winckler's NPI (1023189008) is active in the NPPES registry as of the last update on 2008-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.