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Dr. O'Brien is on Doximity

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Education & Training

  • Sidney Kimmel Medical College at Thomas Jefferson University
    Sidney Kimmel Medical College at Thomas Jefferson UniversityClass of 1991

Certifications & Licensure

  • MO State Medical License
    MO State Medical License 2001 - 2025
  • KS State Medical License
    KS State Medical License 2001 - 2024
  • NJ State Medical License
    NJ State Medical License 1999 - 2003
  • PA State Medical License
    PA State Medical License 1993 - 2002
  • American Board of Colon and Rectal Surgery Colon & Rectal Surgery
  • American Board of Surgery Surgery

Hospital Affiliations