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Doctor's Desk


California Orthopedic and Micro Surgery (COMSI)

(COMSI) California Orthopedic & Microsurgery Institute (COMSI) has been established since 2005.  We also have been known as California Orthopedic Institute (COI).  For your convenience, COMSI has expanded to three locations. The first office is in Los Angeles, the second office is in Cerritos, and our third office is located in Anaheim nearby Disneyland. 

       COMSI is renowned in hand and microsurgery, shoulder & elbow surgery, orthopedic fracture care, peripheral nerve injury and repair, and joint repair and reconstruction throughout the world. COMSI covers all ailments related to bones, joints, muscles, and nerves. At COMSI, patients will discover a comprehensive, one-stop treatment facility, covering the full range of injuries and their specific treatment. Our board-certified & fellowship trained orthopedic surgeons keep current on new orthopedic techniques including minimally invasive arthroscopic procedures. Most of our physicians have about twenty years of experience. We have twelve physicians in our team of doctors, which is led by founder and CEO, Dr. Gary Chen. 
       California Orthopedic Micro Surgery Institute (COMSI) provides patients with the highest level of health care. Patients undergo an extensive evaluation during their initial exam that typically includes a detailed history, physical examination, and a follow-up review of the tests they have performed. If necessary, our physicians will perform additional diagnostic procedures to determine the cause of your pain and recommend treatment options using state-of-the-art technology. In addition to our surgical services, COMSI specializes in high-tech, non-surgical treatments that reduce risk and accelerate recovery times. Ask our physicians about the non-surgical options, and learn which treatment is right for you.  
       We accept same-day appointments in person or via our AiTmed Telehealth and accept all major insurances. Please contact us to confirm coverage and to schedule your appointment. 
       We believe in giving back to the community that has trusted us with their care. For your convenience, we have opened two more locations in southern California. Our first facility is located in Downtown of Los Angeles, second is in Cerritos, and our third facility is in Anaheim, Orange County. 

Los Angeles



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