Hung H. Dinh, D.O.
Internal Medicine Physician · Downey, CA
Hung H. Dinh, D.O. is an internal medicine physician with a practice address in Downey, California, and NPI 1386978914, issued on Sep 30, 2009. Check the license (California 20A13922, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hung H. Dinh
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 20A13922 CA
OS11762 FL
UO 2247 FL
Self-reported in NPPES; status is on the state search - Practice location
- 9333 Imperial Hwy, Downey, CA 90242
- Phone
- (562) 657-9000
- Enumerated
- Sep 30, 2009
- Record last updated
- Dec 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160413000833); accepts Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2009
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 9333 Imperial Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Hung H. Dinh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A13922Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average internal medicine physician in 2024
489 Medicare Part D claims for 190 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 25 claims were for opioids.
Most prescribed
- Cefpodoxime Proxetil40 claims
- Furosemide35 claims
- Bisoprolol Fumarate22 claims
- Pantoprazole Sodium22 claims
- Amlodipine Besylate21 claims
- Prednisone17 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 GroupDowney, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hung H. Dinh among 17,696 internal medicine physician records in California
Hung H. Dinh, 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 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2009 · 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).
114 internal medicine physician records list a practice address in Downey
They are 114 of the 3,607 NPPES records with a practice address in Downey, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Downey → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sohail Afra, M.D.Downey, CA 902421023125176
- Ron Chai, M.D.Downey, CA 902421447361316
- Ronald Collins, M.D.Downey, CA 902421235176181
- Rashmi Desai, M.D.Downey, CA 902421801990247
- Basuki Gunawan, M.D.Downey, CA 902421346352473
- Danese Hayes, M.D.Downey, CA 902421689786733
- Goethe Hsu, M.D.Downey, CA 902421386656726
- Diana Hsu, M.D.Downey, CA 902421720090137
Common questions
What is Hung H. Dinh, D.O.'s NPI number?
Hung H. Dinh, D.O.'s National Provider Identifier (NPI) is 1386978914, issued on Sep 30, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Hung H. Dinh, D.O. located?
The NPPES record lists a practice address at 9333 Imperial Hwy, Downey, CA, 90242. Phone: (562) 657-9000. Providers update this record themselves, so call before visiting.
How can I verify Hung H. Dinh, D.O.'s license?
NPPES lists California license number 20A13922, 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 Hung H. Dinh, D.O. prescribe under Medicare Part D?
In 2024, Hung H. Dinh, D.O. had 489 Medicare Part D claims for 190 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.