Quick answers
- Does Diem Quynh P. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Diem Quynh P. 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 Diem Quynh P. Nguyen see?
- In 2024, CMS data shows 177 Original Medicare patients and 749 services for Diem Quynh P. Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is Diem Quynh P. Nguyen's NPI number?
- 1689171019. 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 Diem Quynh P. 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 | 177 |
|---|---|
| Services billed to Medicare | 749 |
| Different services or procedures | 52 |
| Participating Medicare provider | Yes |
| Average age of these patients | 67 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)93 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)60 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)58 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)47 services
- Hospital discharge day management, 30 minutes or less (99238)42 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 cholesterol56%
- Arthritis46%
- Diabetes39%
- COPD36%
- Ischemic heart disease35%
Hospitals where Diem Quynh P. Nguyen works
Medicare's Facility Affiliation Data lists Diem Quynh P. 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.
- Baptist Health - Fort SmithFort Smith, AR · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 040055
- Mercy Hospital Fort SmithFort Smith, AR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 040062
Practice locations
Addresses where Diem Quynh P. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 1001 Towson AveFort Smith, AR 72901 (479) 441‑4000
- 1341 W 6th StWaldon, AR 72959 (479) 452‑1188
- 3000 Medical Ctr PkwyBentonville, AR 72712 (479) 553‑1000
Group practices
Medicare enrollment lists Diem Quynh P. Nguyen as a member of these groups (CMS data updated October 2, 2026).
- Mercy Clinic Fort Smith Communities372 clinicians in the group
- Springdale Bentonville HBP Services LLC84 clinicians in the group
- Sebastian Physician Services, PLLC35 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Fort Smith
Clinicians with the same Medicare primary specialty in Fort Smith, AR — not a recommendation.
Other clinicians in Mercy Clinic Fort Smith Communities
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689171019 |
| 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