John J. Yu, M.D.

Port Jefferson and Riverhead

Dr. John J. Yu is an orthopedic surgeon specializing in injuries of the shoulder, elbow, hip, knee, foot and ankle.  He provides complete, comprehensive, and state of the art orthopaedic care including total joint replacements, sports medicine, and fracture care of all ages.  His expertise includes non-operative and operative (open & arthroscopic) treatment of shoulder, hip, knee, foot, and ankle disorders.  He specializes in joint cartilage restoration/preservation of the knee and ankle, surgery of the meniscus, rotator cuff & labrum, as well as ligament & tendon repair/reconstruction of the knee, shoulder & ankle.  

Dr. Yu graduated with highest honors from the Sophie Davis School of Biomedical Engineering where he majored in biomedical science while receiving his medical degree from Stony Brook University School of Medicine.  He then performed his orthopedic surgery residency at the prestigious NYU Hospital for Joint Diseases in Manhattan, New York.  During his training at NYU HJD, Dr. Yu received didactic and hands-on training with nationally and internationally recognized senior orthopedic surgeons considered the ‘best in their field’.

While completing his residency, Dr. Yu received specialized training at the University of Maryland R. Adams Cowley Shock Trauma Center, one of the nation’s busiest trauma hospitals and is proficient in caring for patients requiring orthopaedic trauma care.

Dr. Yu further pursued advance training in foot & ankle surgery at NYU HJD after his residency under the expert guidance of Drs. Mrozcek, Sheskier, and Chapman. He assisted in the care of several professional and collegiate sports teams including the New York Rangers and various collegiate teams of NYU, gaining experience in treating athletes at all levels of competition.  While at NYU, his training focused on the treatment of sports related foot & ankle injuries, ligament repair/reconstruction, cartilage restoration, arthroscopic and endoscopic procedures of the foot & ankle, as well as ankle replacement surgery.

Dr. Yu is a member of the Medical Society of the State of New York, the Suffolk County Medical Society, and the American Academy of Orthopedic Surgeons. 

Specialties
Orthopedic Surgery, Joint Reconstruction, Arthroscopic Surgery, Sports Medicine, Foot & Ankle Surgery, Joint Preservation Surgery,  Shoulder Rotator Cuff Repair, Shoulder Stabilization & Labrum Surgery, Knee Meniscus Surgery, OATS Surgery of the Knee & Ankle, Microfracture of the Knee & Ankle, Open & Percutaneous Achilles Tendon repair, Ankle Fracture Surgery, Lisfranc Fixation and all other sports related injuries along with traumatic orthopaedic fractures.

Hospital Affiliations
John T. Mather Memorial Hospital
St. Charles Hospital and Rehabilitation Center
Southampton Hospital

Dr. Yu's Participating Insurance Plans: 

  • AARP
  • BlueCross BlueShield (All plans except HealthPlus)
  • Cigna PPO, EPO and Indemnity
  • Health Republic
  • Island Group
  • Magnacare (excluding Oscar)
  • Medicare
  • No Fault
  • Oxford Freedom (Liberty effective 4/1/15)
  • United Healthcare Choice Plus
  • Worker Compensation

If your plan is not listed please contact the office to verify participation.  If the physician is out-of-network we will provide an estimate of cost upon request.  Provider participation may vary from one provider to the other.  Each provider's eligibility is listed at the bottom of his/her profile

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Port Jefferson Office

635 Belle Terre Road, Suite 204
Port Jefferson, NY 11777

(631) 474-0008

Southampton Office

686 County Route 39A
Southampton, NY 11968

(631) 283-0355

Riverhead Office

788 Harrison Avenue
Riverhead, NY 11901

(631) 591-3801