Welcome to Tri-County Orthopedics

Effective 10/01/2015, Tri-County Orthopedics will follow the U.S. Government mandate to convert to a new diagnosis system. During this transition, you may experience some delays in service. We apologize for this inconvenience and thank you for your patience during this transition period.

Our fourteen board-certified, orthopedic doctors at Tri-County Orthopedics are the preferred, leading experts for diagnosing and treating bone, joint, and muscle injuries and conditions as well as musculoskeletal and spinal disorders in adults and children.

Located in northern New Jersey, our Tri-County Orthopedics’ doctors provide service through five specialty Centers of Excellence at our main location in Cedar Knolls and satellite locations in Sparta and Bedminster.

"I had a problem for years with my shoulder which I ignored but ultimately could not rely on it for every day use. I saw Dr. Willis and after x-rays and a MRI, it was determined I required surgery. I returned to work two weeks after surgery, and within eight months consisting of physical therapy and performing a home exercise program, I feel my arm is much stronger than my dominant side. My son was also seen by Dr. Willis from an overuse elbow injury from pitching. It was a toss up between surgery or a more conservative approach and Dr. Willis decided to take the conservative approach. He recommended physical therapy and had him stop playing baseball for a few months that spring. My son was able to return to baseball that fall playing 1st base and this spring he will be able to pitch once again :) I’m extremely pleased with Dr. Willis and the whole Tri-County staff"-- Dorothie C.

Treated by: Andrew A. Willis, M.D.

Overall Practice Rating

Average Rating: 4.6
(92 reviews)

Proud Providers for:

  • Drew University
  • Delbarton School
  • Roxbury High School
  • Morristown-Beard School
  • Morris Hills High School
  • The Pingry School
  • Ridge High School
  • Bernards High School
  • Morris Catholic High School
  • Parsippany High School


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