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Internal Medicine

James D. Duncan, MD

Works at hospitals in Danville, KY · Lexington, KY · Kentucky

Summary

James D. Duncan, MD (Internal Medicine) is listed by Medicare at 3 hospitals in Danville, KY and Lexington, KY. NPI 1598725020. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about James D. Duncan, 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)
University Of Kentucky College Of MedicineMedical school
MaleGender (as listed)
Kentuckyone Health Medical Group IncGroup practice

Quick answers

Which hospitals does James D. Duncan work at?
Medicare's official clinician data lists James D. Duncan at 3 hospitals: Ephraim McDowell Regional Medical Center, Saint Joseph East and Saint Joseph Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does James D. Duncan see patients?
Medicare's clinician data lists 1 practice location in Lexington, KY. Call before your visit to confirm the address.
What is James D. Duncan's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Hospitalist.
Does James D. Duncan accept Medicare assignment?
Yes. Medicare's clinician data says James D. Duncan 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 James D. Duncan's NPI number?
1598725020. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where James D. Duncan works

Medicare's Facility Affiliation Data lists James D. Duncan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where James D. Duncan is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists James D. Duncan as a member of this group (CMS data updated 2026-10-02).

  • Kentuckyone Health Medical Group Inc264 clinicians in the group

Specialties

Find other Internal Medicine doctors in Kentucky →

Other internal medicine doctors in Lexington

Clinicians with the same Medicare primary specialty in Lexington, KY — not a recommendation.

All internal medicine doctors in Lexington →

Clinician information

CredentialMD
Medical schoolUniversity Of Kentucky College Of Medicine
Graduation year1997
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1598725020
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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians