Ellen Yulin Chang, MD
Diagnostic Radiology Physician · San Francisco, CA
Ellen Yulin Chang, MD is a diagnostic radiology physician with a practice address in San Francisco, California, and NPI 1427450212, issued on Sep 23, 2014. Check the license (California A168940, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ellen Yulin Chang
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- A168940 CA
2019019873 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1001 Potrero Avenue, San Francisco, CA 94110
- Phone
- (628) 206-8020
- Enumerated
- Sep 23, 2014
- Record last updated
- Aug 29, 2022
- Medicare enrollment
- Enrolled (PECOS I20200619001405); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 1001 Potrero Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ellen Yulin Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A168940Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- City And County OF San FranciscoSan Francisco, CA
- University OF California Sfgh Medical GroupSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellen Yulin Chang among 4,500 diagnostic radiology physician records in California
Ellen Yulin Chang, MD is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 78% of them.
- NPI issued2014 · 78% of these records are older, 19% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2014 · median 2004 among the 3,130 with a school on file
- Record last updated2022 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in San Francisco → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Shinn-Huey ChouSan Francisco, CA 941101710208210
- Pierre-Alain Cohen, MDSan Francisco, CA 941101508810557
- Brett Elicker, MDSan Francisco, CA 941101891748034
- Bethany Eubanks, MDSan Francisco, CA 941101487610655
- Helen Galvin, MDSan Francisco, CA 941101861434268
- Alisa Gean-Gersch, MDSan Francisco, CA 941101942246343
- Terry Lynch, MDSan Francisco, CA 941101285689935
- Peter McClure, M.D.San Francisco, CA 941101710106000
Common questions
What is Ellen Yulin Chang, MD's NPI number?
Ellen Yulin Chang, MD's National Provider Identifier (NPI) is 1427450212, issued on Sep 23, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Ellen Yulin Chang, MD located?
The NPPES record lists a practice address at 1001 Potrero Avenue, San Francisco, CA, 94110. Phone: (628) 206-8020. Providers update this record themselves, so call before visiting.
How can I verify Ellen Yulin Chang, MD's license?
NPPES lists California license number A168940, 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. Medicare files from data.cms.gov. 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.