Welcome to California Orthopedic Micro Surgery Institute.  Dr. Gary Chen is one of the prominent Doctors in Los Angeles and Orange County areas. California Orthopedic Micro Surgery Institute (COMSI) treats a full range of bone, joint, muscle, and nerve problems.  At COMSI, patients will discover a comprehensive, one-stop treatment facility for all ailments.

Full Range of Professional Orthopedic Services
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The collective knowledge and experience present at California Orthopedic Micro Surgery Institute Services has one of the most technologically advanced surgery centers ever built, enables us to treat patients on a level that redefines the surgery and recovery experience. In fact, COMSI‘s surgeons perform minimally invasive spinal procedures that used to required major incisions and lengthy hospital stays. Neck and Spine Care

Comprehensive Hip and Knee Care

At California Orthopedic Micro Surgery Institute, we perform a wide variety of surgical Knee Services both repairing and replacing.

  • Uniknee (Unicondylar) Knee Replacement
  • Total Knee Replacement
  • Robotic Knee surgery
  • Revision Total Knee Replacement (for previously failed knee replacement)
  • Minimally Invasive Total Knee Replacement
  • The Knee Joint
  • Total Knee Replacement
  • Technical Aspects of Total Knee Replacement
  • Unicompartmental Knee Replacements
  • Technical Aspects of Unicompartmental Knee Replacement
  • Robotic Knee Replacement

Apart from management of hip arthritis, our Hip Replacement services include:

  • Surgery for Total Hip Replacement
  • Hip Replacement
  • Posterior Lateral Approach
  • Computer Assisted Total Hip Replacement

Foot and Ankle Surgery
When the foot and/or ankle is injured, it often requires highly specialized treatment. Over the years California Orthopedic Micro Surgery Institute Services, physicians have helped thousands of patients get back on their feet with Los Angeles’ most advanced orthopedic services. Our Foot & Ankle program includes diagnostic imaging, physical therapy, on-site MRI, and surgical treatments.

COMSI accepts most insurances, our staff members will help you with paper works. We take patients on the Medicare plan. As a courtesy, we will also bill your secondary insurance provider directly. Please call us for more information that we can help you.