Quick answers
- Does Hung H. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Hung H. Nguyen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Hung H. Nguyen see?
- In 2024, CMS data shows 382 Original Medicare patients and 5,932 services for Hung H. Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is Hung H. Nguyen's NPI number?
- 1619921095. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Hung H. Nguyen, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 382 |
|---|---|
| Services billed to Medicare | 5,932 |
| Different services or procedures | 57 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)2,803 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)1,314 services
- Administration of influenza virus vaccine (G0008)188 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)179 services
- Influenza vaccine split virus, preservative free (90662)178 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Diabetes55%
- Arthritis46%
- Osteoporosis42%
- Chronic kidney disease36%
Practice locations
Addresses where Hung H. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 10362 Bolsa Ave, Suite 110Westminster, CA 92683 (714) 531‑2091
Group practices
Medicare enrollment lists Hung H. Nguyen as a member of this group (CMS data updated October 2, 2026).
- Bolsa Medical Group14 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Westminster
Clinicians with the same Medicare primary specialty in Westminster, CA — not a recommendation.
Other clinicians in Bolsa Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1972 (54 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619921095 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians