Jess H. Lonner, MD

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Practice Philosophy

My philosophy, and that of my team, is to provide highly effective and innovative care for patients who come from as nearby as around the corner or from around the world. It is also our commitment to give patients the attention and respect that they deserve and expect.

Practice Name
  • Rothman Institute
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Locations and Appointments

825 Old Lancaster Road, Suite 100
Bryn Mawr, PA 19010
  • Phone: 800.321.9999
  • Fax: 610.525.0370
  • Accessibility: Public Transportation, Handicap Access

Rothman Institute NovaCare Complex
2 NovaCare Way
Philadelphia, PA 19145
  • Phone: 800.321.9999
  • Fax: 610.525.0370
  • Accessibility: Public Transportation, Handicap Access

327 Greentree Road
Sewell, NJ 08080
  • Phone: 800.321.9999
  • Fax: 610.525.0370
  • Accessibility: Public Transportation, Handicap Access

Do you have questions or are you looking for help in choosing the right provider?

Call 1.866.CALL.MLH (1.866.225.5654), Monday through Friday between 8:00 am–6:00 pm ET, to speak with a member of our referral staff who can help find the doctor who is right for you.

About Jess H. Lonner, MD

Dr. Lonner has been recognized by his peers as amongst the top 20 knee surgeons in the United States for his innovative work in total knee and partial knee replacement surgery, as well as for advancing the field of robotic knee replacement surgery. Patients from around the world have sought surgical care from Dr. Lonner.

He is a graduate of Boston University School of Medicine and completed his Residency in Orthopaedic Surgery at the Hospital for Joint Diseases in New York, followed by additional advanced Fellowship training in Reconstructive Knee Surgery, Knee Replacement Surgery and Arthroscopic Knee Surgery at the Massachusetts General Hospital/Harvard Medical School.

He has authored or edited hundreds of textbooks, articles and reviews and has lectured throughout the world. His work is cited commonly and his efforts have been rewarded with professional and lay accolades.

  • Gender: Male
  • Language: English
Specialties Accepting New Patients
Orthopedic Surgery and Orthopedics Board certified since 1999
Primary Affiliation
Academic Titles
  • Associate Professor of Orthopaedic Surgery, Thomas Jefferson University
  • University of Pennsylvania School of Medicine
Clinical Titles
  • Attending Physician


Medical school
  • Boston University School of Medicine
  • Boston University School of Medicine
  • New York University Medical Center
  • New York University Medical Center
  • Hospital for Joint Diseases
  • Hospital for Joint Diseases
  • New England Baptist Hospital
  • New England Baptist Hospital

*Members of the Main Line Health medical staff are affiliated with Bryn Mawr Hospital, Lankenau Medical Center, Paoli Hospital and Riddle Hospital. Membership on the medical staff of any of our hospitals does not constitute an employment or agency relationship.

Awards & Memberships

Current Membership & Activities
  • American Academy of Orthopaedic Surgeons
  • The Knee Society, Board of Governors
  • Insall Club
  • American Medical Association
  • Philadelphia Orthopaedic Society, Board of Directors (President, 2010–2011)
  • Pennsylvania Orthopaedic Society
  • AMA/AAHKS Physician Consortium for Performance Improvement