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Emergency Medicine

Stephanie C. Demasi, MD

Works at hospitals in Nashville, TN · Tennessee

Summary

Dr. Stephanie C. Demasi, MD is an emergency medicine doctor at 1301 Medical Ctr Dr, Nashville, TN 37232. Phone: (615) 322-5000. Accepts Medicare assignment. In 2024, Stephanie C. Demasi had 134 Original Medicare patients and 157 services. NPI 1003313834. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 1301 Medical Ctr Dr, Nashville, TN 37232 · Directions (1 more location)
  • Phone: (615) 322‑5000
  • Medicare: Accepts Medicare assignment
  • Hospital: Vanderbilt University Medical Center
  • Group practice: Vanderbilt University Medical Center
  • Medical school: Virginia Commonwealth University, School Of Medicine · graduated 2018 (8 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Stephanie C. Demasi, 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 Stephanie C. Demasi accept Medicare assignment?
Yes. Medicare's clinician data says Stephanie C. Demasi 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.
How many Medicare patients does Stephanie C. Demasi see?
In 2024, CMS data shows 134 Original Medicare patients and 157 services for Stephanie C. Demasi. This counts Original Medicare only and measures volume, not quality.
What is Stephanie C. Demasi's NPI number?
1003313834. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Stephanie C. Demasi, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients134
Services billed to Medicare157
Different services or procedures15
Participating Medicare providerYes
Average age of these patients70

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)62 services
  2. Critical care, first 30-74 minutes (99291)40 services
  3. Emergency department visit with moderate level of medical decision making (99284)27 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol74%
  • Arthritis57%
  • Depression49%
  • Ischemic heart disease42%
  • Chronic kidney disease41%

Hospitals where Stephanie C. Demasi works

Medicare's Facility Affiliation Data lists Stephanie C. Demasi at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Stephanie C. Demasi is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Vanderbilt University Medical Center3,567 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Tennessee →

Other emergency medicine doctors in Nashville

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

All emergency medicine doctors in Nashville →

Other clinicians in Vanderbilt University Medical Center

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

Clinician information

CredentialMD
Medical schoolVirginia Commonwealth University, School Of Medicine
Graduation year2018 (8 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1003313834
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians