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Internal Medicine

Charles Mills, MD

Sees patients in Fort Smith, AR · Farmington, AR · Arkansas

Summary

Charles Mills, MD (Internal Medicine) is enrolled with Medicare at 2 practice locations in Fort Smith, AR and Farmington, AR. NPI 1689659674. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Charles Mills, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
29Years since medical school (graduated 1997)
Loma Linda University School Of MedicineMedical school
MaleGender (as listed)

Quick answers

Where does Charles Mills see patients?
Medicare's clinician data lists 2 practice locations, including Fort Smith, AR and Farmington, AR. Call before your visit to confirm the address.
What is Charles Mills's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Rheumatology.
Does Charles Mills accept Medicare assignment?
Yes. Medicare's clinician data says Charles Mills accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Charles Mills?
(479) 755-6900, as listed in official Medicare / NPI Registry data.
What is Charles Mills's NPI number?
1689659674. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Charles Mills is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Charles Mills as a member of these groups (CMS data updated 2026-10-02).

  • Arcare253 clinicians in the group
  • Trublu, LLC13 clinicians in the group

Specialties

Find other Internal Medicine doctors in Arkansas →

Other internal medicine doctors in Fort Smith

Clinicians with the same Medicare primary specialty in Fort Smith, AR — not a recommendation.

All internal medicine doctors in Fort Smith →

Clinician information

CredentialMD
Medical schoolLoma Linda University School Of Medicine
Graduation year1997
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1689659674
CorrectionsReport 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

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians