Michael Hung Nguyen, DO
Hospitalist (DO) in Riverside, California, trained at Arizona College of Osteopathic Medicine Mid Western University (class of 2018). 195 Medicare patients in 2024, $71,006 paid; nearly all of their 225 Part D prescriptions were generic (91%). Abbott Laboratories was the largest of 2 companies reporting payments in 2025, $281.77 in all, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1366939043 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Apr 18, 2018 |
| Last updated in NPPES | Oct 1, 2023 |
| Certified by provider | Oct 1, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | 19061 | CA |
| Internal Medicine | 207R00000X | 19061 | CA |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in California, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Michael Minh Nguyen · General Practice | 1128b14 | Sep 20, 2006 | Milpitas, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Possible (name) | See above |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hospitalist (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 195 |
|---|---|
| Services billed | 636 across 12 procedure codes |
| Paid by Medicare | $71,006 |
Part D prescriptions in 2024
| Prescriptions (claims) | 225 · 247 30-day fills |
|---|---|
| Patients | 88 |
| Total drug cost | $7,290 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Arizona College of Osteopathic Medicine Mid Western University |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Hospitalist |
Medical group
- Providence Healthcare Partners IncRiverside, CA · 37 clinicians
Hospital affiliations
- Parkview Community Hospital Medical CenterRiverside, CA
- Riverside Community HospitalRiverside, CA
Other facilities
- Elite Hospice & Palliative Care IncHospice · Rancho Cucamonga, CA
Industry payments (Open Payments)
- 2025$281.77 · 2 payments from 2 companies
- 2024$128.29 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $159.13 | 1 |
| Csl Behring | $122.64 | 1 |
What the 2025 payments were for
- Food and Beverage$281.77 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other hospitalists in Riverside
- 1003893348
- 1023403730
- 1164654604
- 1336305036
- 1396206629
- 1437672763
- 1871025551
- 1992293211
- 1215223748
- 1033738919
- 1063890093
- 1184243123
All 35 hospitalists in Riverside · All hospitalists in California