Our expert surgeons are ranked among the St. Louis area’s Top Doctors in every surgical subspecialty.
Surgeon-scientists at WashU Medicine translate discoveries into new standards of care. Our dedicated faculty of investigators lead research laboratories to advance knowledge and improve treatment options.
Together, our surgeons, researchers, nurses, medical staff and trainees are making an impact on patient care across the country and around the globe.
John A. Olson Jr., MD, PhD
Chair, Department of Surgery
William K. Bixby Professor
Section of Surgical Oncology
Division of General Surgery
Surgeon-in-Chief, Barnes-Jewish Hospital
- Phone: 314-362-2280
Nupam Mahajan, PhD
Endowed Professor of Urologic Surgery Research
Director of Urologic Research
Division of Urologic Surgery
Section of Surgical Therapeutics
Division of Surgical Sciences
- Phone: 314-273-7759
Arnab Majumder, MD
Assistant Professor of Surgery
Section of Minimally Invasive Surgery
Division of General Surgery
- Phone: 314-454-8877
Jonathan M. Maldonado, MD
Assistant Professor of Surgery
Division of Urologic Surgery
- Phone: 314-362-8200
Julie A. Margenthaler, MD
Professor of Surgery
Section of Surgical Oncology
Division of General Surgery
Program Director of Breast Oncology Fellowship
- Phone: 314-362-2280
- New Patient Appointments: 314-362-2280 or click here to request a new appointment online.
- Current Patients & Administrative: 314-362-2280
Gregory R. Martens, MD, PhD
Assistant Professor of Surgery
Section of Transplant Surgery
Division of General Surgery
- Phone: 314-747-9889
Colin A. Martin, MD
Director, Division of Pediatric Surgery
Drs. Brad and Barbara Warner Endowed Professor of Surgery
Surgeon-in-Chief, St. Louis Children’s Hospital
- Phone: 314-454-6022
Muhammad Faraz Masood, MD
Associate Professor of Surgery
Section of Cardiac Surgery
Division of Cardiothoracic Surgery
Video Profile
- Phone: 314-362-7260
Sara E. Matsumoto, MD
Instructor of Surgery
Section of Acute and Critical Care Surgery
Division of General Surgery
- Phone: 314-362-5298
Matthew J. McHale, DO
Adjunct Assistant Professor (C-STARS)
Section of Acute and Critical Care Surgery
Division of General Surgery
- Phone: 314-362-5298
Michelle Medintz, MD
Adjunct Assistant Professor of Surgery (C-STARS)
Section of Acute and Critical Care Surgery
Division of General Surgery
- Phone: 314-362-5298
Lawrence G. Mendelow, MD
Assistant Professor of Surgery
Section of Colon and Rectal Surgery
Division of General Surgery
- Phone: 314-454-7177
