Hoa Hieu Nguyen, M.D.
Internal Medicine Physician · Irvine, CA
Hoa Hieu Nguyen, M.D. is an internal medicine physician with a practice address in Irvine, California, and NPI 1427285394, issued on Jun 17, 2009. Check the license (California A118305, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hoa Hieu Nguyen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A118305 CA
205442 LA
Self-reported in NPPES; status is on the state search - Practice location
- 16100 Sand Canyon Ave Ste 240, Irvine, CA 92618
- Phone
- (949) 393-7443
- Enumerated
- Jun 17, 2009
- Record last updated
- Jun 29, 2023
- Medicaid ID
- 1950190 LA
- Medicare enrollment
- Enrolled (PECOS I20140702001869); 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 16100 Sand Canyon Ave Ste 240
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Narges FeizabadiAdult Health Nurse Practitioner1336569862
- Deborah Lee, FNP-CFamily Nurse Practitioner1689400012
- Eulson Lee, FNPFamily Nurse Practitioner1841038890
- Jeanelle Ong, NPAdult Health Nurse Practitioner1598524498
Verify Hoa Hieu Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A118305Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average internal medicine physician in 2024
728 Medicare Part D claims for 31 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Furosemide61 claims
- Gabapentin42 claims
- Pantoprazole Sodium42 claims
- Atorvastatin Calcium37 claims
- Montelukast Sodium33 claims
- Levothyroxine Sodium30 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: $147.34
2 payments; by number, the most common kind was food and beverage; the largest payer was La Jolla Pharmaceutical Company. 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.
Bills Medicare through one group practice
- Pcg Medical Institute CorpGarden Grove, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hoa Hieu Nguyen among 17,696 internal medicine physician records in California
Hoa Hieu Nguyen, M.D. 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 updated2023 · 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).
155 internal medicine physician records list a practice address in Irvine
They are 155 of the 7,778 NPPES records with a practice address in Irvine, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Irvine → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Savitha Bharadwaj, M.D.Irvine, CA 926181760470926
- Juan Cabrera, M.D.Irvine, CA 926181447254792
- William Chen, M.D.Irvine, CA 926181881659142
- Subrato Ghosh, MDIrvine, CA 926181083607055
- Kambiz Karimi, M.D.Irvine, CA 926181184688475
- Sara Kim, M.D.Irvine, CA 926181912944166
- Brian Lo, MDIrvine, CA 926181073501565
- Emad Mikhail, MDIrvine, CA 926181376582957
Common questions
What is Hoa Hieu Nguyen, M.D.'s NPI number?
Hoa Hieu Nguyen, M.D.'s National Provider Identifier (NPI) is 1427285394, issued on Jun 17, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Hoa Hieu Nguyen, M.D. located?
The NPPES record lists a practice address at 16100 Sand Canyon Ave Ste 240, Irvine, CA, 92618. Phone: (949) 393-7443. Providers update this record themselves, so call before visiting.
How can I verify Hoa Hieu Nguyen, M.D.'s license?
NPPES lists California license number A118305, 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 Hoa Hieu Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Hoa Hieu Nguyen, M.D. had 728 Medicare Part D claims for 31 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.