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Photo of Dr. Jonathan Efron

Jonathan Edward Efron, M.D.

Chief of Ravitch Service
Associate Professor of Surgery


Appointment Phone


Main Location

The Johns Hopkins Hospital

Out-of-State & International Patients +
Out of State Patients

Call 410-464-6641 (8a.m. to 6p.m., EST, Mon-Fri)

Learn more about our out-of-state patient services »

International Patients

Call +1-410-502-7683 (7a.m. to 6p.m., EST, Mon-Fri)

Learn more about our international patient services »


  • Chief of Ravitch Service
  • The Mark M. Ravitch, M.D. Endowed Professorship in Gastrointestinal Surgery
  • Associate Professor of Surgery
  • Associate Professor of Urology

Centers & Institutes



The Johns Hopkins Hospital

Appointment Phone: 443-997-1508

600 N. Wolfe Street
Sheikh Zayed Tower
Baltimore, MD 21287 map
Phone: 410-955-7323

Johns Hopkins Bayview Medical Center

Appointment Phone: 443-997-1508

4940 Eastern Avenue
Baltimore, MD 21224 map
Phone: 410-955-7323


Anorectal Disorders, Colon Cancer, Colorectal Surgery , Colostomy-sparing Surgery, Fecal Incontinence, General Surgery, Inflammatory Bowel Disease, Minimally Invasive Surgery, Rectal Cancer, Sphincter-preserving Surgery

Research Interests

Sphincter-preserving surgery; Rectal cancer; Minimally invasive surgery; Inflammatory bowel disease; General surgery; Fecal incontinence; Colostomy-sparing surgery; Colorectal surgery; Colon cancer; Anorectal disorders


Dr. Jonathan Edward Efron is an associate professor of urology and surgery at the Johns Hopkins School of Medicine. He is a recipient of The Mark M. Ravitch, M.D., Endowed Professorship in Gastrointestinal Surgery and serves as the Chief of Ravitch Service at Johns Hopkins.

Dr. Efron is a colon and rectal surgeon whose clinical focus includes colon and rectal cancer, inflammatory bowel disease, fecal incontinence and anorectal disorders. He is an expert in minimally invasive and robotic procedures and colostomy-sparing procedures, such as ileal pouch anal anastomosis. He also has a particular interest in the management of recurrent rectal cancer.

Dr. Efron received his B.A. from Franklin and Marshall College, and completed his M.D. at the University of Maryland in 1993. He then conducted a residency in general surgery at North Shore University Hospital in Manhasset, NY, and a fellowship in colorectal surgery at the Cleveland Clinic of Florida.

He joined the Johns Hopkins faculty after serving as an associate professor of surgery at the Mayo Clinic College of Medicine in Arizona.

Dr. Efron has published more than 71 articles in peer-reviewed journals, 11 book chapters and over 104 abstracts. He has presented his work locally, regionally, nationally and internationally.

He is a member of the American College of Surgeons, the American Society of Colon and Rectal Surgeons, the Society of American Gastrointestinal Endoscope Surgeons, the Society of LaparoEndoscopic Surgeons, the Society of Surgeons of the Alimentary Tract and the Southwest Surgical Society. He also serves on the World Journal of Surgery editorial board and is a member of the Southwest Chapter of the CCFA Medical Advisory Committee.

In 2015, Dr. Efron was named executive vice director of the Johns Hopkins Department of Surgery. In this role, Dr. Efron assists in the day-to-day operation of the department and serves as a liaison between The Johns Hopkins Hospital and its affiliates. more

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Meet Our Expert - Dr. Jonathan Efron

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    Additional Information

  • Education +


    • University of Maryland School of Medicine / MD (1993)


    • North Shore University Hospital / General Surgery (1998)


    • Cleveland Clinic Florida / Colorectal Surgery (1999)


    • American Board of Colon & Rectal Surgery / Colon and Rectal Surgery (2000, 2009)
    • American Board of Surgery / Surgery (1999, 2008)
  • Research & Publications +
  • Academic Affiliations & Courses +
  • Activities & Honors +


    • American College of Surgeons
    • American Society of Colon and Rectal Surgeons
    • Society of American Gastrointestinal Endoscope Surgeons
    • Society of LaparoEndoscopic Surgeons
    • Society of Surgeons of the Alimentary Tract
    • Southwest Surgical Society

    Professional Activities

    • Editorial Board, World Journal of Surgery
  • Videos & Media +


    Rectal Cancer | Q&A

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