Quick answers
- Does An G. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says An G. 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 An G. Nguyen see?
- In 2024, CMS data shows 18 Original Medicare patients and 96 services for An G. Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is An G. Nguyen's NPI number?
- 1629024880. 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 An G. 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 | 18 |
|---|---|
| Services billed to Medicare | 96 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)17 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)15 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 cholesterol67%
- High blood pressure61%
Hospitals where An G. Nguyen works
Medicare's Facility Affiliation Data lists An G. Nguyen at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Mercy Health Saint Mary'sGrand Rapids, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230059
- Spectrum HealthGrand Rapids, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230038
Practice locations
Addresses where An G. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 4130 Breton Rd SE, Suite BGrand Rapids, MI 49512 (616) 281‑0093
Specialties
- Family Practiceprimary
Other family doctors in Grand Rapids
Clinicians with the same Medicare primary specialty in Grand Rapids, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wayne State University School Of Medicine |
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629024880 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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