Andrew Ray Tren Chang, MD
Psychiatry Physician · San Mateo, CA
Andrew Ray Tren Chang, MD is a psychiatry physician with a practice address in San Mateo, California, and NPI 1447001102, issued on Apr 1, 2024. Check the license (California 15634, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Andrew Ray Tren Chang
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 15634 CA
Self-reported in NPPES; status is on the state search - Practice location
- 222 W 39TH Ave, San Mateo, CA 94403
- Phone
- (650) 954-0544
- Enumerated
- Apr 1, 2024
- Record last updated
- Jun 18, 2025
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 222 W 39TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- John Anderson, MDObstetrics & Gynecology Physician1013082429
- Shea AndersonClinical Social Worker1689964991
- Zohra Ansari, MSWClinical Social Worker1326462904
Verify Andrew Ray Tren Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 15634Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Andrew Ray Tren Chang among 8,673 psychiatry physician records in California
Andrew Ray Tren Chang, MD is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2024, is newer than 98% of them.
- NPI issued2024 · 98% of these records are older, under 1% newer
- In a Medicare fileNo · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
89 psychiatry physician records list a practice address in San Mateo
They are 89 of the 3,909 NPPES records with a practice address in San Mateo, and 8,673 psychiatry physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 8,673 in California → Every provider in San Mateo → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Kathleen Akiyama, M.D.San Mateo, CA 944031194886879
- Nasrin Bashiri, MDSan Mateo, CA 944031700974920
- Hung-Ming Chu, M.D.San Mateo, CA 944031790834174
- Vikas Duvvuri, M.D., PH.D.San Mateo, CA 944031255470480
- D. Feeley, M.D.San Mateo, CA 944031548351158
- Mina Fisher, M.D.San Mateo, CA 944031124037874
- Nandini Ganpule, MDSan Mateo, CA 944031326110156
- Lynne Haynes-Tucker, MDSan Mateo, CA 944031689737157
Common questions
What is Andrew Ray Tren Chang, MD's NPI number?
Andrew Ray Tren Chang, MD's National Provider Identifier (NPI) is 1447001102, issued on Apr 1, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Ray Tren Chang, MD located?
The NPPES record lists a practice address at 222 W 39TH Ave, San Mateo, CA, 94403. Phone: (650) 954-0544. Providers update this record themselves, so call before visiting.
How can I verify Andrew Ray Tren Chang, MD's license?
NPPES lists California license number 15634, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.