Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Diem-Quynh Phuong Nguyen, MD

Individual provider Family Medicine Physician · NPI 1689171019

Dr. Diem-Quynh Phuong Nguyen, MD is a Family Practice in Fort Smith, Arkansas. Qualified in 2017, 9 years ago. Practices with Sebastian Physician Services, PLLC, a 41-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Arkansas.

Years since qualifying
9
Licensed in
AR
In the registry since
2018
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4620 Towson Ave
Fort Smith, AR 72901-7961
Phone: (479) 573-3082
Fax: (479) 573-3100
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 612 S 12th St, Fort Smith, AR 72901-4702 — (479) 785-2431
  • 400 N Pepper Ave, Colton, CA 92324-1819 — (407) 968-9706

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence E-14544 (AR)

Record details

NPI number1689171019
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 11, 2018
Last updated in NPPESAugust 7, 2025
Certification dateAugust 7, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Sebastian Physician Services, Pllc — 41 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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