Amir A. Mahmoud, MD

Hospitals where Amir A. Mahmoud works

Medicare's Facility Affiliation Data lists Amir A. Mahmoud 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.

• Barnes Jewish HospitalSaint Louis, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260032

Practice locations

Addresses where Amir A. Mahmoud is enrolled with Medicare (CMS data updated October 2, 2026).

• 1 Barnes Jew Hosp PlzSaint Louis, MO 63110 (314) 747‑3000

Group practices

Medicare enrollment lists Amir A. Mahmoud as a member of this group (CMS data updated October 2, 2026).

• Washington University3,029 clinicians in the group

Specialties

• Hematologyprimary
• Internal Medicinealso

Find other Hematology doctors in Missouri →

Other hematologists in Saint Louis

Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.

• Kristen M. Sanfilippo, MD
• Kandice Roberts, MD
• Amy W. Zhou, MD
• Vorachart Auethavekiat, MD
• Sana Saif Ur Rehman, MD
• Stephen T. Oh, MD
• Amber Afzal, MD
• Joshua I. Siner, MD

All hematologists in Saint Louis →

Other clinicians in Washington University

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

• Susan E. Mitchell-Derenski
• Rachel L. Guess, MD
• Rene M. Roy, MD
• Colby L. Parks, MD
• Loc V. Thang, MD
• Jeffrey R. Koenitzer, MD

Clinician information

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