Hung Quan, MD
Internal Medicine Physician · Garden Grove, CA
Hung Quan, MD is an internal medicine physician with a practice address in Garden Grove, California, and NPI 1639263023, issued on Oct 3, 2006. Check the license (California A53594, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hung Quan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A53594 CA
95326 NM
Self-reported in NPPES; status is on the state search - Practice location
- 9191 Westminster Ave, Garden Grove, CA 92844
- Phone
- (714) 899-2000
- Enumerated
- Oct 3, 2006
- Record last updated
- Sep 9, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicaid ID
- F2819 NM
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 9191 Westminster Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christopher Dinh, D.D.SGeneral Practice Dentistry1699863407
- Helen Do, NURSE PRACTITIONERFamily Nurse Practitioner1386034296
- Jeffrey Ho, D.O.Physical Medicine & Rehabilitation Physician1316986045
- Giap Le, O.D.Optometrist1407046386
Verify Hung Quan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A53594Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% more Medicare Part D claims than the average internal medicine physician in 2024
3,507 Medicare Part D claims for 278 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Atorvastatin Calcium296 claims
- Losartan Potassium266 claims
- Amlodipine Besylate214 claims
- Metformin Hcl199 claims
- Fluticasone Propionate138 claims
- Jardiance118 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.
Industry payments in 2024: $926.29
15 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Hung Quan among 17,696 internal medicine physician records in California
Hung Quan, MD 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2016 · 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).
39 internal medicine physician records list a practice address in Garden Grove
They are 39 of the 4,572 NPPES records with a practice address in Garden Grove, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Garden Grove → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michael Dao, M.D.Garden Grove, CA 928441437321932
- Robert Ha, MDGarden Grove, CA 928441750302188
- Son Le, M.D.Garden Grove, CA 928441861441552
- Tam Le, MDGarden Grove, CA 928441336381607
- Daniel Luong, M.D.Garden Grove, CA 928441811420508
- Jae Man Park, M.D.Garden Grove, CA 928441669628228
- Dai Pham, M.D.Garden Grove, CA 928441730542192
- Sarah Strube, DOGarden Grove, CA 928441124359138
Common questions
What is Hung Quan, MD's NPI number?
Hung Quan, MD's National Provider Identifier (NPI) is 1639263023, issued on Oct 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Hung Quan, MD located?
The NPPES record lists a practice address at 9191 Westminster Ave, Garden Grove, CA, 92844. Phone: (714) 899-2000. Providers update this record themselves, so call before visiting.
How can I verify Hung Quan, MD's license?
NPPES lists California license number A53594, 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 Quan, MD prescribe under Medicare Part D?
In 2024, Hung Quan, MD had 3,507 Medicare Part D claims for 278 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.