Quick answers
- Does Phat C. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Phat C. 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 Phat C. Nguyen see?
- In 2024, CMS data shows 243 Original Medicare patients and 368 services for Phat C. Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is Phat C. Nguyen's NPI number?
- 1881636777. 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 Phat C. 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 | 243 |
|---|---|
| Services billed to Medicare | 368 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)237 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)54 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)49 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%
- Arthritis31%
- Diabetes30%
- Chronic kidney disease26%
- Ischemic heart disease23%
Hospitals where Phat C. Nguyen works
Medicare's Facility Affiliation Data lists Phat C. 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.
- Mary Hitchcock Memorial HospitalLebanon, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 300003
- Weeks Medical CenterLancaster, NH · Critical Access Hospital · Emergency services: listed by Medicare · CCN 301303
Practice locations
Addresses where Phat C. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 173 Middle StLancaster, NH 03584 (603) 788‑4911
Group practices
Medicare enrollment lists Phat C. Nguyen as a member of this group (CMS data updated October 2, 2026).
- Weeks Medical Center75 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in New Hampshire
Clinicians with the same Medicare primary specialty in New Hampshire — not a recommendation.
Other clinicians in Weeks Medical Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | At Still University Of Health Sciences, College Of Osteo Med, Kirksville |
| 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) | 1881636777 |
| 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