Dennis Chang, D.O.
Internal Medicine Physician · Glendale, CA
Dennis Chang, D.O. is an internal medicine physician with a practice address in Glendale, California, and NPI 1912360918, issued on Mar 29, 2016. Check the license (California 17165, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Dennis Chang
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 17165 CA
20A17165 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1420 S Central Ave, Glendale, CA 91204
- Phone
- (424) 465-2719
- Enumerated
- Mar 29, 2016
- Record last updated
- Mar 4, 2022
- Medicare enrollment
- Enrolled (PECOS I20191230001228); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1420 S Central Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Dennis Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 17165Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
248 Medicare Part D claims for 102 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium19 claims
- Atorvastatin Calcium14 claims
- Amlodipine Besylate12 claims
- Eliquis12 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
- Cedar Springs Hospitalist Medical Group IncGlendale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dennis Chang among 17,696 internal medicine physician records in California
Dennis Chang, D.O. 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 2016, is newer than 79% of them.
- NPI issued2016 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2016 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 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).
92 internal medicine physician records list a practice address in Glendale
They are 92 of the 4,742 NPPES records with a practice address in Glendale, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Glendale → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Wageh Azer, M.D.Glendale, CA 912041477501799
- Arsine Barsegyan, M.D.Glendale, CA 912041548211899
- Tze Dang, MDGlendale, CA 912041932202470
- Astrik Davtian, M.D.Glendale, CA 912041184675175
- Moshe Freiberg, M.D.Glendale, CA 912041639115611
- Roy Fu, M.D.Glendale, CA 912041972686632
- Marco Gomez Garcia, M.D.Glendale, CA 912041265444129
- Warren Hosseinion, M.D.Glendale, CA 912041629170527
Common questions
What is Dennis Chang, D.O.'s NPI number?
Dennis Chang, D.O.'s National Provider Identifier (NPI) is 1912360918, issued on Mar 29, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Dennis Chang, D.O. located?
The NPPES record lists a practice address at 1420 S Central Ave, Glendale, CA, 91204. Phone: (424) 465-2719. Providers update this record themselves, so call before visiting.
How can I verify Dennis Chang, D.O.'s license?
NPPES lists California license number 17165, 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 Dennis Chang, D.O. prescribe under Medicare Part D?
In 2024, Dennis Chang, D.O. had 248 Medicare Part D claims for 102 beneficiaries; 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.