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University of Pennsylvania Health System Colon and Rectal Surgery

Residency · Philadelphia, PA

Sponsored by University of Pennsylvania Health System · Director Joshua Bleier

People

Everyone 12Leadership 3Faculty 8Residents 1Graduates 16
  • Joshua Bleier, MD

    Program Director, Colon and Rectal Surgery Fellowship

    Colorectal surgeon, Professor of Clinical Surgery at Perelman School of Medicine at the University of Pennsylvania

  • EP
    Erica Pettke, MD, MPH

    Associate Program Director, Colorectal Surgery Fellowship

    Colorectal surgeon, Associate Professor of Clinical Surgery at Perelman School of Medicine at the University of Pennsylvania

  • NM
    Najjia Mahmoud, MD

    Chief, Division of Colon and Rectal Surgery

    Colorectal surgeon, Associate Professor of Surgery and Chief of the Division of Colon and Rectal Surgery at University of Pennsylvania Health System

  • Carmen E. Guerra, MD, MSCE

    Affiliate Member, Penn Center for Cancer Care Innovation at the Abramson Cancer Center

  • CS
    Cimarron Sharon, MD

    Assistant Professor of Clinical Surgery

    General practice physician, Assistant Professor of Clinical Surgery at University of Pennsylvania Health System

  • Clifford Ko, MD, MS

    Chief, Colon and Rectal Surgery

    Colorectal surgeon, Chief at UCLA David Geffen School of Medicine/UCLA Medical Center

  • EP
    Emily Paulson, MD

    Professor of Surgery

    Surgeon, Professor of Surgery at Perelman School of Medicine at the University of Pennsylvania

  • Jason Tong, MD

    Assistant Professor of Surgery

    Surgeon, Assistant Professor of Surgery at Perelman School of Medicine at the University of Pennsylvania

  • Lillias Maguire, MD

    Assistant Professor of Surgery

    Colorectal surgeon, Assistant Professor of Surgery at Perelman School of Medicine at the University of Pennsylvania

  • PH
    Paul Hernandez, MD

    Assistant Professor of Clinical Surgery

    Colorectal surgeon, Assistant Professor of Clinical Surgery at Perelman School of Medicine at the University of Pennsylvania

  • RE
    Rachel Ekaireb, MD

    Fellow, 2026–2027

    Colorectal surgeon at Perelman School of Medicine at the University of Pennsylvania

  • Robert Fry, MD

    Chair of Surgery, Pennsylvania Hospital, Philadelphia, PA

    Colorectal surgery (formerly proctology) physician, Emeritus Professor CE of Surgery at University of Pennsylvania Health System