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Dr. Thomas K. John is board certified in orthopedics and a fellowship trained surgeon who specializes in adult reconstruction and joint replacement. He is no stranger to New Jersey having received a Doctor of Medicine degree from New Jersey Medical School as part of a highly selective combined medical program.

Dr. John remains active in multiple professional societies including the American Association of Orthopaedic Surgeons (AAOS), the American Association of Hip and Knee Surgeons (AAHKS), and state medical societies.


Dr. John completed his residency in orthopaedic surgery from the Albert Einstein Medical Center, one of the busiest trauma centers in Pennsylvania, and a fellowship in adult reconstruction and joint replacement at the Hospital for Special Surgery/Weill Cornell Medical College in New York City. In addition, his research has been published and presented locally and nationally at multiple meetings. He looks forward to meeting you in person and discussing your options.

Dr. John has privileges at Hackensack University Medical Center in Hackensack, Hudson Crossing Surgical Center in Fort Lee, HackensackUMC at Pascack Valley in Westwood and HackensackUMC at Mountainside in Montclair.


He specializes in primary, complex, and revision total knee and hip replacement surgery with a special interest in minimally invasive techniques, direct anterior and posterior hip replacement, partial knee replacement, peri-prosthetic fractures, robotic and computer assisted surgery, and patient specific surgery. He believes in utilizing an evidence-based approach in creating customized treatment plans for each patient, optimizing the total joint experience. He employs non-operative and advanced surgical options, to treat his patient’s pain, discomfort, and orthopedic disability.

Procedures include:

  • Total Knee Replacement
  • Unicondylar Knee Replacement
  • Total Hip Replacement
  • Articular Cartilage Restoration

Professional Organizations

  • American Association of Orthopaedic Surgeons (AAOS)
  • American Association of Hip and Knee Surgeons (AAHKS)



Michael L. Gross, MD
Sports Medicine

Thomas K. John, MD
Joint Replacement

Oscar Vazquez, MD
Sports Medicine

Richard D. Rhim, MD
Spine Surgery

Ira Esformes, MD
General Orthopedics

Michael T. Benke, MD
Sports Medicine

John F. Mendes, MD
General Orthopedics

Mark D. Chase, MD
General Orthopedics

Raghu Maddela, MD, MPH
Non-Operative Spine Care

Carissa Meyer, MD
Hand & Wrist

Ralph Napoli, DPM
Foot & Ankle

James C. Natalicchio, MD
Back & Neck

A. Ylenia Giuffrida, MD
Hand, Wrist & Elbow