John P. O’Hearn, MD

Dr. O’Hearn specializes in the treatment of a variety of orthopaedic conditions and has extensive experience with a wide array of orthopaedic procedures, including:

  • Arthroscopic Surgery – Shoulder, Elbow, Knee, and Ankle

  • Conformis – Personalized Knee Implants

  • Sports Medicine

  • Arthroscopic Rotator Cuff Repair

  • Arthroscopic Anterior Cruciate Ligament (ACL) Reconstruction

  • Endoscopic Carpal Tunnel Release
  • Fracture Care

  • Sub-Chondroplasty
  • Percutaneous Tenotomy


  • Medical: Creighton University School of Medicine, Omaha, NE


  • Internship: Creighton University Affiliated Hospitals, Omaha, NE

  • Orthopaedic Surgery Residency: University of Maryland Hospital, Baltimore, MD

Specialty Certification

  • American Board of Orthopaedic Surgery

Staff Memberships

  • Upper Chesapeake Medical Center

  • Harford Memorial Hospital

Professional Affiliations

Hospital Affiliations

Dr O’Hearn performs most surgeries on an outpatient basis. The location of your surgery is largely dependent upon the procedure being done and your insurance plan. His surgical procedures are performed at the following locations:

Surgery Center of
Bel Air

Upper Chesapeake Medical Center

Harford County Ambulatory Surgery Center