What is Winston Chang's NPI number?

Winston Chang's National Provider Identifier (NPI) is 1215636188, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Winston Chang's specialty?

Winston Chang is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).

Where is Winston Chang located?

Winston Chang's practice location on file with NPPES is 6203 San Ignacio Ave Ste 150, San Jose, CA 95119-1371.

What is Winston Chang's phone number?

The practice phone number listed in the NPPES registry for Winston Chang is (408) 284-9080.

Is Winston Chang's NPI active?

Yes — Winston Chang's NPI (1215636188) is active in the NPPES registry as of the last update on 2025-01-16.

IndividualActive

Winston Chang

NPI 1215636188 · Marriage & Family Therapist · San Jose, CA

Winston Chang is a Marriage & Family Therapist provider in San Jose, CA (NPI 1215636188).

Provider details

NPI number: 1215636188
Entity type: Individual
Primary specialty: Marriage & Family TherapistBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Marriage & Family TherapistPrimary106H00000XLicense AMFT138236 (CA)
Behavioral Health & Social Service Providers
Mental Health Counselor101YM0800X
Behavioral Health & Social Service Providers

Profile Score

Established profile(62/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
3 yrs in NPPES registry
Profile completeness38% of score
83% 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

6203 San Ignacio Ave Ste 150

San Jose, CA 95119-1371

Phone: (408) 284-9080

Street-level locationGet directions

More CA providers

Mailing address

1885 Lundy Ave Ste 223

San Jose, CA 95131-1888

Additional practice locations (2)

16615 Lark Ave Ste 100
Los Gatos, CA 95032-7645
Phone: (408) 990-2827
1885 Lundy Ave Ste 223
San Jose, CA 95131-1888
Phone: (408) 284-9000

Enumerated: 2023-02-28
Last updated: 2025-01-16
Certified: 2025-01-16

Frequently asked questions

What is Winston Chang's NPI number?: Winston Chang's National Provider Identifier (NPI) is 1215636188, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Winston Chang's specialty?: Winston Chang is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
Where is Winston Chang located?: Winston Chang's practice location on file with NPPES is 6203 San Ignacio Ave Ste 150, San Jose, CA 95119-1371.
What is Winston Chang's phone number?: The practice phone number listed in the NPPES registry for Winston Chang is (408) 284-9080.
Is Winston Chang's NPI active?: Yes — Winston Chang's NPI (1215636188) is active in the NPPES registry as of the last update on 2025-01-16.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.