Quick answers
- Does Thanh D. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Thanh D. 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 Thanh D. Nguyen see?
- In 2024, CMS data shows 651 Original Medicare patients and 3,124 services for Thanh D. Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is Thanh D. Nguyen's NPI number?
- 1346419918. 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 Thanh D. 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 | 651 |
|---|---|
| Services billed to Medicare | 3,124 |
| Different services or procedures | 23 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)664 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)658 services
- Dialysis services, 4 or more physician visits per month (20 years or older) (90960)516 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)200 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)118 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%
- Chronic kidney disease75%
- Diabetes60%
- Ischemic heart disease41%
- Heart failure39%
Hospitals where Thanh D. Nguyen works
Medicare's Facility Affiliation Data lists Thanh D. 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.
- Emanuel Medical CenterTurlock, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050179
- Memorial Hospital Los BanosLos Banos, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050528
- Mercy Medical CenterMerced, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050444
Practice locations
Addresses where Thanh D. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 3393 G St, Suite DMerced, CA 95340 (209) 230‑9065
Group practices
Medicare enrollment lists Thanh D. Nguyen as a member of this group (CMS data updated October 2, 2026).
- Stanislaus Kidney and Hypertension2 clinicians in the group
Specialties
- Nephrologyprimary
Other nephrologists in Merced
Clinicians with the same Medicare primary specialty in Merced, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Vermont College Of Medicine |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1346419918 |
| 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