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Christopher Chang, DO
NPI 1720621303 · Psychiatry Physician · Stockton, CA
Christopher Chang, DO is a Psychiatry Physician provider in Stockton, CA (NPI 1720621303).
Provider details
- NPI number
- 1720621303
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 17607 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(65/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 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
7707 Austin Rd
Stockton, CA 95215-8312
Phone: (626) 975-8374
Street-level locationGet directions
Mailing address
P.o. Box 1372
El Cerrito, CA 94530
Registry dates
- Enumerated
- 2019-10-25
- Last updated
- 2021-10-08
- Certified
- 2021-10-08
Frequently asked questions
- What is Christopher Chang's NPI number?
- Christopher Chang's National Provider Identifier (NPI) is 1720621303, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Chang's specialty?
- Christopher Chang is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Chang located?
- Christopher Chang's practice location on file with NPPES is 7707 Austin Rd, Stockton, CA 95215-8312.
- What is Christopher Chang's phone number?
- The practice phone number listed in the NPPES registry for Christopher Chang is (626) 975-8374.
- Is Christopher Chang's NPI active?
- Yes — Christopher Chang's NPI (1720621303) is active in the NPPES registry as of the last update on 2021-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.