Simon Y. Chang, M.D.
Family Medicine Physician · Downey, CA
Simon Y. Chang, M.D. is a family medicine physician with a practice address in Downey, California, and NPI 1760594097, issued on Aug 31, 2006. Check the license (California A69205, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Simon Y. Chang
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A69205 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10441 Lakewood Blvd Ste AB, Downey, CA 90241
- Phone
- (562) 869-1070
- Enumerated
- Aug 31, 2006
- Record last updated
- Nov 15, 2025
- Fax
- (562) 286-8777
- Medicaid ID
- 00A692050 CA
- Entity
- Type 1 · individual
Also registered at 10441 Lakewood Blvd Ste AB
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Muhammad Anees, M.D.Internal Medicine Physician1730323353
- Anne Gail ApostolNurse Practitioner1801633805
- Sophie-Chizoma Asogu-Nwosu, NURSE PRACTITIONERNurse Practitioner1538718598
- Raj Balasundaram, M.D.Internal Medicine Physician1083840367
- David Chen, MDInternal Medicine Physician1295315489
- Janine Cuevas, NPAcute Care Nurse Practitioner1477278489
Verify Simon Y. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A69205Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% more Medicare Part D claims than the average family medicine physician in 2024
4,042 Medicare Part D claims for 239 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium309 claims
- Eliquis201 claims
- Amlodipine Besylate168 claims
- Pantoprazole Sodium134 claims
- Metoprolol Tartrate116 claims
- Levothyroxine Sodium115 claims
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.
65 family medicine physician records list a practice address in Downey
They are 65 of the 3,607 NPPES records with a practice address in Downey, and 17,133 family medicine physician records in California.
All 65 in Downey → All 17,133 in California → Every provider in Downey →
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is Simon Y. Chang, M.D.'s NPI number?
Simon Y. Chang, M.D.'s National Provider Identifier (NPI) is 1760594097, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Simon Y. Chang, M.D. located?
The NPPES record lists a practice address at 10441 Lakewood Blvd Ste AB, Downey, CA, 90241. Phone: (562) 869-1070. Providers update this record themselves, so call before visiting.
How can I verify Simon Y. Chang, M.D.'s license?
NPPES lists California license number A69205, 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 Simon Y. Chang, M.D. prescribe under Medicare Part D?
In 2024, Simon Y. Chang, M.D. had 4,042 Medicare Part D claims for 239 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.