Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Leila N. Casteel, NP

Sees patients in Franklin, TN · Brentwood, TN · Tennessee

Summary

Leila N. Casteel, NP is an internal medicine doctor at 109 Del Rio Pike, Franklin, TN 37064. Phone: (615) 435-3854. Accepts Medicare assignment. NPI 1083714778. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 109 Del Rio Pike, Franklin, TN 37064 · Directions (1 more location)
  • Phone: (615) 435‑3854
  • Medicare: Accepts Medicare assignment
  • Group practice: Summit Medical Group, PLLC
  • School: graduated 2009
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Leila N. Casteel, 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 Leila N. Casteel accept Medicare assignment?
Yes. Medicare's clinician data says Leila N. Casteel 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 Leila N. Casteel's NPI number?
1083714778. 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 Leila N. Casteel is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Leila N. Casteel as a member of this group (CMS data updated October 2, 2026).

  • Summit Medical Group, PLLC652 clinicians in the group

Specialties

Find other clinicians: Internal Medicine, Tennessee →

Other internal medicine doctors in Franklin

Clinicians with the same Medicare primary specialty in Franklin, TN — not a recommendation.

All internal medicine doctors in Franklin →

Other clinicians in Summit Medical Group, PLLC

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

Clinician information

CredentialNP
Graduation year2009
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1083714778
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