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Advanced Heart Failure and Transplant Cardiology

Melissa L. McCormack, MD

Works at hospitals in Houston, TX · Texas

Summary

Dr. Melissa L. McCormack, MD is a heart failure and transplant cardiologist at 6410 Fannin St, Houston, TX 77030. May accept Medicare assignment. NPI 1538665401. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Heart failure and transplant cardiologist (Medicare lists Advanced Heart Failure and Transplant Cardiology)
  • Address: 6410 Fannin St, Houston, TX 77030 · Directions (1 more location)
  • Medicare: May accept Medicare assignment
  • Hospital: Memorial Hermann - Texas Medical Center
  • Medical school: graduated 2018 (8 years since medical school)
  • Gender (as listed): Female
NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Melissa L. McCormack, 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 Melissa L. McCormack accept Medicare assignment?
Medicare's clinician data says Melissa L. McCormack may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
What is Melissa L. McCormack's NPI number?
1538665401. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Melissa L. McCormack works

Medicare's Facility Affiliation Data lists Melissa L. McCormack 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 Melissa L. McCormack is enrolled with Medicare (CMS data updated October 2, 2026).

  • 6410 Fannin StHouston, TX 77030
  • 6414 Fannin St, Suite G125Houston, TX 77030

Specialties

Find other Advanced Heart Failure and Transplant Cardiology doctors in Texas →

Other heart failure and transplant cardiologists in Houston

Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.

All heart failure and transplant cardiologists in Houston →

Clinician information

CredentialMD
Graduation year2018 (8 years since medical school)
Gender (as listed)Female
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1538665401
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians