< Program Faculty
Zachary Callahan, M.D.
Associate Program Director | Assistant Professor

Surgical Specialty / Areas of Interest - Foregut Surgery, Advanced Endoscopy, Bariatric Surgery

Education -

  • B.A. Political Science | University of New Hampshire; Durham, NH | 2010
  • M.D. | University of Cincinnati College of Medicine; Cincinnati, OH | 2015

Postgraduate Training -

  • Surgical Resident, Department of Surgery, | Thomas Jefferson University, Philadelphia, PA | 2021
  • Clinical Researcher, Department of Minimally Invasive Surgery, NorthShore University HealthSystem, Evanston, IL | 2019
  • Administrative Chief Resident, Department of Surgery, Thomas Jefferson University Philadelphia, PA | 2021
  • Minimally Invasive Surgery Fellow, Department of Surgery, Northshore University HealthSystem, Evanston, IL | 2022
  • Fellowship Director: Michael Ujiki MD, Accredited in Advanced GI MIS, Bariatric, Comprehensive Flexible Endoscopy, and Foregut

Certifications - American Board of Surgery (ABS) Certified | 2022

Hobbies & Interests - Spending time with family and friends | Mindfulness, Yoga

copyright 2014 - 2025 Ascension Saint Thomas