Quick answers
- Does Henry H. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Henry 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 Henry H. Nguyen see?
- In 2024, CMS data shows 257 Original Medicare patients and 948 services for Henry H. Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is Henry H. Nguyen's NPI number?
- 1578534020. 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 Henry 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 | 257 |
|---|---|
| Services billed to Medicare | 948 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Diagnostic exam of nasal passages using an endoscope (31231)161 services
- Ct scan of face without contrast (70486)117 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)102 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)95 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)92 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%
- Arthritis52%
- Diabetes40%
- Chronic kidney disease27%
- Ischemic heart disease26%
Practice locations
Addresses where Henry H. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 6567 Autumn Glen CtRancho Cucamonga, CA 91730
- 8241 Rochester Ave, Suite 130Rancho Cucamonga, CA 91730 (909) 466‑8400
Group practices
Medicare enrollment lists Henry H. Nguyen as a member of this group (CMS data updated October 2, 2026).
- Ent and Sinus Center P C2 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in Ent and Sinus Center P C
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Stanford University School Of Medicine |
| Graduation year | 1991 (35 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578534020 |
| 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