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Internal Medicine

Harelle C. Duncan, MD

Sees patients in Lake Mary, FL · Florida

Summary

Dr. Harelle C. Duncan, MD is an internal medicine doctor at 525 Technology Park, Suite 109, Lake Mary, FL 32746. Phone: (407) 647-2346. Accepts Medicare assignment. NPI 1174718837. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 525 Technology Park, Suite 109, Lake Mary, FL 32746 · Directions
  • Phone: (407) 647‑2346
  • Medicare: Accepts Medicare assignment
  • Group practice: Central Florida Inpatient Medicine LLC
  • Medical school: graduated 2006 (20 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Harelle C. Duncan, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Harelle C. Duncan accept Medicare assignment?
Yes. Medicare's clinician data says Harelle C. Duncan 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.
What is Harelle C. Duncan's NPI number?
1174718837. 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 Harelle C. Duncan is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Harelle C. Duncan as a member of this group (CMS data updated October 2, 2026).

  • Central Florida Inpatient Medicine LLC111 clinicians in the group

Specialties

Find other Internal Medicine doctors in Florida →

Other internal medicine doctors in Lake Mary

Clinicians with the same Medicare primary specialty in Lake Mary, FL — not a recommendation.

All internal medicine doctors in Lake Mary →

Other clinicians in Central Florida Inpatient Medicine LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2006 (20 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1174718837
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 October 2, 2026, retrieved October 29, 2026
  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