California Orthopedic & Microsurgery Institute

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 COMSI has three office locations in Southern California


Dr. Gary Chen

Chief of Orthopedic Surgery

Welcome to California Orthopedic Micro Surgery Institute also known as (COMSI).  We treat a full range of bone, joint, muscle, and nerve problems. At COMSI, patients will discover a comprehensive, one-stop treatment facility for all ailments. California Orthopedic & Microsurgery Institute covers the full range of injuries treatment.

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.  Our board-certified & fellowship trained orthopedic surgeons stay up to date on new orthopedic techniques including minimally invasive Arthroscopic procedures.  At California Orthopedic & Microsurgery Institute, patients will discover the best comprehensive, one-stop treatment for all ailments related to Bones, Joints, Muscles, and Nerves. We have twelve Physicians in our team of doctors, which is led by Dr. Gary Chen.

Gary Y. Chen, M.D is the founder & director of COMSI (California Orthopedic and Microsurgery Institute) is specialties in Fracture/Trauma Hand & Micro Surgery Peripheral Nerve Surgery Shoulder & Elbow Surgery.  Dr. Gary  Chen is one of the prominent doctors in Los Angeles, he received his medical degree from Sun Yat-Sen University of Medical Science in Guangzhou, China, and completed his Orthopedic surgery residency, Plastic and Hand micro-surgery specialty training in China. Dr. Chen served his surgical internship at Brown University, an Orthopedic residency at Los Angeles County Hospital, Orthopedic trauma fellowship at the University of Louisville, Hand micro-surgery fellowship at both Kleinert Hand Center and Curtis National Hand Center, was a microsurgery instructor at Curtis National Hand Center (Johns Hopkins University).  He is currently the medical director of Orthopedic Surgery Program at California Medical Center and Assistant Clinical Professor of Orthopedic Surgery at UCLA.

One Stop Shop for Orthopedic Services:

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Arthritis Diagnosis and Treatment

Arthroscopic Surgery

Cartilage Stem Cell Injection

Electrodiagnostic Evaluation

Finger/Limb Replantation

Foot & Ankle Surgery

Fracture and Trauma Care

Hand Surgery

Hip Surgery

Knee & Leg Surgery

Peripheral Nerve Surgery

Personal Injuries

Physical & Occupational Rehab

Reconstructive Microsurgery 

Shoulder & Elbow Surgery

Spinal Evaluation Service

Sports Medicine

Total Joint Surgery

Worker’s Compensation Injuries