Michael Hung Nguyen, DO
Hospitalist Physician · Riverside, CA
Michael Hung Nguyen, DO is a hospitalist physician with a practice address in Riverside, California, and NPI 1366939043, issued on Apr 18, 2018. Check the license (California 19061, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael Hung Nguyen
- Credential
- DO
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 19061 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4445 Magnolia Ave, Riverside, CA 92501
- Phone
- (951) 788-3000
- Enumerated
- Apr 18, 2018
- Record last updated
- Oct 1, 2023
- Medicare enrollment
- Enrolled (PECOS I20211020003131); accepts Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2018
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 4445 Magnolia Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alyssa Aboff, CRNA, DNPCertified Registered Nurse Anesthetist1760133292
- Brandon Abrajan, DOStudent in an Organized Health Care Education/Training Program1861141186
Verify Michael Hung Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 19061Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average hospitalist physician in 2024
225 Medicare Part D claims for 88 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Furosemide14 claims
- Amoxicillin-Clavulanate Potass13 claims
- Cefdinir13 claims
- Hydrocodone-Acetaminophen12 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: $128.29
2 payments; by number, the most common kind was food and beverage; the largest payer was Zoll Services LLC (a/k/a Zoll LifeCor Corp). The 7,324 providers of this specialty with any payment received $494.84 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
- Providence Healthcare Partners IncRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Hung Nguyen among 3,099 hospitalist physician records in California
Michael Hung Nguyen, DO is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 77% of them.
- NPI issued2018 · 77% of these records are older, 19% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2018 · median 2010 among the 2,505 with a school on file
- Record last updated2023 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Riverside → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Maria Akamnonu, M.D.Riverside, CA 925011023403730
- Sarmad Al-Bahrani, MDRiverside, CA 925011437672763
- Kiran Chamarti, DORiverside, CA 925011225732258
- Victor Fayad, M.DRiverside, CA 925011164654604
- Masoumeh Ghaffari, M.D.Riverside, CA 925011437470507
- Wesley Livingston, DORiverside, CA 925011871025551
- Alina Popa, MDRiverside, CA 925011003893348
- Remus Popa, MDRiverside, CA 925011265419519
Common questions
What is Michael Hung Nguyen, DO's NPI number?
Michael Hung Nguyen, DO's National Provider Identifier (NPI) is 1366939043, issued on Apr 18, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Michael Hung Nguyen, DO located?
The NPPES record lists a practice address at 4445 Magnolia Ave, Riverside, CA, 92501. Phone: (951) 788-3000. Providers update this record themselves, so call before visiting.
How can I verify Michael Hung Nguyen, DO's license?
NPPES lists California license number 19061, 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 Michael Hung Nguyen, DO prescribe under Medicare Part D?
In 2024, Michael Hung Nguyen, DO had 225 Medicare Part D claims for 88 beneficiaries; the average among hospitalist physician prescribers was 521. 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.