Quick answers
- Does Khanh K. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Khanh K. 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 Khanh K. Nguyen see?
- In 2024, CMS data shows 354 Original Medicare patients and 930 services for Khanh K. Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is Khanh K. Nguyen's NPI number?
- 1770585044. 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 Khanh K. 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 | 354 |
|---|---|
| Services billed to Medicare | 930 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)244 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)130 services
- Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (G0500)99 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)94 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)62 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%
- Diabetes54%
- Arthritis27%
- Chronic kidney disease27%
- Osteoporosis27%
Practice locations
Addresses where Khanh K. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 2331 Montpelier Dr, Suite BSan Jose, CA 95116 (408) 347‑9001
Group practices
Medicare enrollment lists Khanh K. Nguyen as a member of this group (CMS data updated October 2, 2026).
- San Jose Gastroenterology, Inc.11 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in San Jose
Clinicians with the same Medicare primary specialty in San Jose, CA — not a recommendation.
Other clinicians in San Jose Gastroenterology, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1770585044 |
| 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