Yin Chu Anny Chang, M.D.
Internal Medicine Physician · Anaheim, CA
Yin Chu Anny Chang, M.D. is an internal medicine physician with a practice address in Anaheim, California, and NPI 1487979043, issued on Apr 7, 2010. Check the license (California A123781, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yin Chu Anny Chang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A123781 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3440 E LA Palma Ave, Anaheim, CA 92806
- Phone
- (714) 644-2000
- Enumerated
- Apr 7, 2010
- Record last updated
- Nov 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130621000564); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2010
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 3440 E LA Palma Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Marithel Arambulo, MSN RNC-OB PHNRegistered Nurse1174329551
- Salli AzizHospitalist Physician1841720604
- Ricardo Bardales MendozaInternal Medicine Physician1801103130
- Sharrise Boop, MSWSocial Worker1134643489
Verify Yin Chu Anny Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A123781Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
12 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yin Chu Anny Chang among 17,696 internal medicine physician records in California
Yin Chu Anny Chang, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 63% of them.
- NPI issued2010 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2010 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
189 internal medicine physician records list a practice address in Anaheim
They are 189 of the 9,018 NPPES records with a practice address in Anaheim, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Anaheim → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ricardo Bardales MendozaAnaheim, CA 928061801103130
- Kristin Cummings, MDAnaheim, CA 928061700997095
- Annie Harrington, M.D.Anaheim, CA 928061275719742
- Richard Hughes, M.D.Anaheim, CA 928061003255837
- Hyun Doo Lee, M.D.Anaheim, CA 928061760828438
- Michael LiuAnaheim, CA 928061881896520
- Alireza Noorian, MDAnaheim, CA 928061467683508
- Kevin Pham, M.D.Anaheim, CA 928061275894479
Common questions
What is Yin Chu Anny Chang, M.D.'s NPI number?
Yin Chu Anny Chang, M.D.'s National Provider Identifier (NPI) is 1487979043, issued on Apr 7, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Yin Chu Anny Chang, M.D. located?
The NPPES record lists a practice address at 3440 E LA Palma Ave, Anaheim, CA, 92806. Phone: (714) 644-2000. Providers update this record themselves, so call before visiting.
How can I verify Yin Chu Anny Chang, M.D.'s license?
NPPES lists California license number A123781, 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.
How much does Yin Chu Anny Chang, M.D. prescribe under Medicare Part D?
In 2024, Yin Chu Anny Chang, M.D. had 12 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.