Naomi Chiang Chang, D.O.
Family Medicine Physician · Harbor City, CA
Naomi Chiang Chang, D.O. is a family medicine physician with a practice address in Harbor City, California, and NPI 1568705804, issued on Apr 4, 2013. Check the license (California 20A13873, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Naomi Chiang Chang
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A13873 CA
Self-reported in NPPES; status is on the state search - Practice location
- 25825 Vermont Ave, Harbor City, CA 90710
- Phone
- (310) 325-5111
- Enumerated
- Apr 4, 2013
- Record last updated
- Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161111001321); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 25825 Vermont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Yossef Aelony, MDPulmonary Disease Physician1619178597
- Lisa Agustines, MDObstetrics & Gynecology Physician1750452736
Verify Naomi Chiang Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A13873Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average family medicine physician in 2024
263 Medicare Part D claims for 205 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Prednisone36 claims
- Cefadroxil22 claims
- Cephalexin22 claims
- Albuterol Sulfate Hfa18 claims
- Amoxicillin-Clavulanate Potass14 claims
- Mupirocin12 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupHarbor City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Naomi Chiang Chang among 17,133 family medicine physician records in California
Naomi Chiang Chang, D.O. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 68% of them.
- NPI issued2013 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2013 · median 2005 among the 10,652 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
85 family medicine physician records list a practice address in Harbor City
They are 85 of the 958 NPPES records with a practice address in Harbor City, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Harbor City → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Martha Andrews, MDHarbor City, CA 907101851468722
- Victor Benson, MDHarbor City, CA 907101710054622
- Agnes Chen, DOHarbor City, CA 907101205908787
- David Green, MDHarbor City, CA 907101922175751
- Hans Laursen, D.OHarbor City, CA 907101225078330
- Chin Lee, MDHarbor City, CA 907101710054606
- Robert Meth, MDHarbor City, CA 907101548337470
- Yung-Mee Park, MDHarbor City, CA 907101285609396
Common questions
What is Naomi Chiang Chang, D.O.'s NPI number?
Naomi Chiang Chang, D.O.'s National Provider Identifier (NPI) is 1568705804, issued on Apr 4, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Naomi Chiang Chang, D.O. located?
The NPPES record lists a practice address at 25825 Vermont Ave, Harbor City, CA, 90710. Phone: (310) 325-5111. Providers update this record themselves, so call before visiting.
How can I verify Naomi Chiang Chang, D.O.'s license?
NPPES lists California license number 20A13873, 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 Naomi Chiang Chang, D.O. prescribe under Medicare Part D?
In 2024, Naomi Chiang Chang, D.O. had 263 Medicare Part D claims for 205 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.