Michael Callahan

Michael J. Callahan, MD

Director, Computed Tomography; Division Chief, Abdominal Imaging; Medical Director, Ultrasound; Staff Radiologist

Associate Professor of Radiology, Harvard Medical School

Medical Services


  • Computed Tomography (CT or CAT scan)
  • Dose Reduction
  • Gastrointestinal Radiology


  • Radiology


  • Diagnostic Radiology
  • Magnetic Resonance Imaging (MRI)
  • Computed Tomography (CT)
  • Inflammatory Bowel Disease Center
  • Plain X-ray & Fluoroscopy
  • Ultrasound
  • Pancreatic Disorders Program
To schedule an appointment: Call 617-355-6286

Experience and Education


Undergraduate School

Hobart College, 1991

Geneva, NY

Medical School

Upstate Medical University, 1995

Syracuse, NY


Malden Hospital, 1995-1996

Malden, MA


Tufts University School of Medicine, 1996-2000

Boston, MA

Fellowship, Pediatric Radiology

Boston Children's Hospital, 2000-2002

Boston, MA


  • Radiology, Pediatric Radiology

Professional History

I received my B.S. degree from Hobart College, and my M.D. degree from Upstate Medical University in Syracuse, New York. I completed a diagnostic radiology residency at Tufts Medical Center, and a fellowship in pediatric radiology at Boston Children's Hospital.  I’m currently an associate professor of radiology at Harvard Medical School, medical director of computed tomography, physician director for radiation safety, and division chief of abdominal imaging at Boston Children’s Hospital. My research interests include CT dose optimization, abdominal imaging and musculoskeletal ultrasound.  I am a member of the Image Gently® Steering Committee, and will be the Secretary of the Society for Pediatric Radiology (SPR) from 2016-2019.

To schedule an appointment: Call 617-355-6286


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Boston Children's Hospital 300 Longwood Avenue, Boston, MA 02115 617-355-6000 | 800-355-7944