Charles Chang, LMFT
NPI 1972637650 · Mental Health Counselor · Cupertino, CA
Charles Chang, LMFT is a Mental Health Counselor provider in Cupertino, CA (NPI 1972637650).
Provider details
- NPI number
- 1972637650
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- LMFT
- Sex
- Male
- Sole proprietor
- Yes
- License
- LMFT47841 (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
19 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
- 2007-03-15
- Last updated
- 2026-05-16
- Certified
- 2026-05-16
Frequently asked questions
- What is Charles Chang's NPI number?
- Charles Chang's National Provider Identifier (NPI) is 1972637650, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Chang's specialty?
- Charles Chang is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Charles Chang located?
- Charles Chang's practice location on file with NPPES is 21710 Steven Creek Blvd, Ste 240, Cupertino, CA 95014-1172.
- What is Charles Chang's phone number?
- The practice phone number listed in the NPPES registry for Charles Chang is (408) 475-6228.
- Is Charles Chang's NPI active?
- Yes — Charles Chang's NPI (1972637650) is active in the NPPES registry as of the last update on 2026-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.