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James B. Chen, M.D.Joint Replacement Surgeon

James B. Chen, MD is a fellowship-trained orthopedic surgeon specializing in adult reconstructive surgery and total joint replacement of the hip and knee, including primary and revision joint replacement. Dr. Chen utilizes advanced technology throughout your episode of care to best personalize your care pathway for hip and knee replacement surgery. Dr. Chen trained and gained recognition at the Hospital for Special Surgery in New York, which is consistently ranked the best orthopedic surgery program in the country. He has expertise in minimally invasive techniques, partial knee replacement, direct anterior and posterior hip replacement, computer-assisted navigation, and robotic joint replacement. His goal is to provide rapid-recovery and personalized care for his patients through the use of effective and current treatment options.

Dr. Chen is also available for consultation in Newport Beach at the DISC Sports and Spine Clinic, 3501 Jamboree Road, Suite 1250, Newport Beach, CA 92660

Dr. Chen grew up in Irvine, CA. He completed his undergraduate education at Cal Poly San Luis Obispo where he received numerous leadership and academic all-American awards participating in NCAA Division I football in addition to graduating Cum Laude in Microbiology. He received his medical degree from the University of California, Los Angeles (UCLA) where he received scholarships for his work in global health and was elected into the Alpha Omega Alpha Honor Society as class president. He stayed at UCLA for his Orthopedic Surgery residency where he gained recognition as consultant of the year and was elected Chief Resident during his final year. Following residency, he completed his subspecialty training at the Hospital for Special Surgery (HSS) which has been ranked the #1 Orthopedic Hospital in the nation by US News and World Report for 12 consecutive years and #1 in the world by Newsweek. At HSS, Dr. Chen had the opportunity to work with many world-renowned specialists in hip and knee reconstruction and was awarded the fellowship Clinical Excellence Award for his clinical and surgical performance.

Dr. Chen has published extensively in orthopedic surgery. He has authored textbook chapters in addition to peer-reviewed articles in several leading orthopedic journals and has presented his work at regional and national conferences. He remains an active candidate member of the American Academy of Orthopaedic Surgeons and the American Association of Hip and Knee Surgeons. He is also hold positions in various committees as a joint replacement subspecialist at both the state and national level.

Dr. Chen is excited to return to serve the medical needs of his home community. He enjoys spending his spare time with his wife and young daughters in addition to staying active outdoors by hiking, biking, running, and surfing.

Common Conditions Treated

Bone Fractures, Joint Dislocations, Bursitis of the Hip, Degenerative Joint Disease of the Hip, Dislocated Hip, Dysplasia, Femoral-Acetabular Impingement, Groin Pain, Hip Arthritis, Hip Bursitis / Trochanteric Bursitis, Hip Cyst, Hip Dislocation, Hip Fracture, Hip Impingement, Hip Pain, Knee Deformity, Joint Pain, Osteoarthritis, Osteonecrosis / Avascular Necrosis, Osteoporosis, Synovitis of the Hip, Chondromalacia, Fractured Knee, Knee Arthritis, Knee Pain, Degenerative Joint Disease of the Knee, Periprosthetic Hip and Knee Fracture.


Through striving to improve patient care surrounding joint replacement surgery, Dr. Chen participates in various paid industry and organization committee roles. Such roles taken on to improve the field may be perceived as a conflict, as such, a full list of disclosures can be searched on the AAOS webpage


Educational Material

Knee Replacement

Hip Replacement


Orthopedic smart implants can 'reestablish normals' in care, DISC surgeon says

Orthopedic surgeon James Chen, MD, has been with DISC Sports and Spine Center since December and is bolstering its total joint replacement program.

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2023 AAHKS Industry Innovation Award Winner – OrthAlign

One of AAHKS’ newest awards, the Industry Innovation Award is a competitive product award for companies exhibiting at the AAHKS Annual Meeting. It recognizes cutting-edge innovation in the field of orthopaedic hip and knee arthroplasty by exhibitors.

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Leg Cramps At Night? 10 Reasons Why (And How To Prevent Cramping!), According To Doctors

Most people experience cramping in the calves, which usually lasts anywhere from a few seconds to several minutes, says James Chen, MD, an orthopedic surgeon at DISC Sports and Spine Center. “Since the muscle is under a sustained contraction, you may experience immobility and pain, and the muscle will feel firm.”

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What Runners Should Know About Broken Kneecaps—and How to Prevent Them

Runners Molly Seidel and Susanna Sullivan both withdrew from the Olympic Trials due to this rare injury.

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The One Thing You Should Never, Ever Do if You Have Joint Pain

It may be tempting to do this, but experts give it a thumbs down.

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Knee Pain When Bending? These 8 MD-Approved Tricks Help End the Ache Naturally

Plagued by dull creaking and stiffness in your knees every time you bend down or climb the stairs? Chances are you’ve got knee osteoarthritis, a top cause of knee pain when bending. And you’re not alone. “Some studies show that 1 in 4 individuals over the age of 45 have some level of arthritic changes in their knee already,” says James Chen, MD, an orthopedic surgeon at DISC Sports & Spine Center in Newport Beach, CA, and a member of the California Orthopedic Association.

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Veena Gets a New Knee

A long-term fitness regimen and deep spiritual belief helped this 82-year-old recover quickly after surgery.

When Veena Grover was working in her husband’s medical practice and helping her children with their studies (two are now doctors and one is a lawyer), the pressure was getting to her. "I needed a change," she remembers, "so I started doing tae kwon do"- the Korean martial art-"and ultimately teaching it. I did that for 10 years and then I started getting into yoga."

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James B. Chen MD maximizes the use of technology in the total knee replacement surgery to customize and enhance patient care at HOI’s California Specialty Surgery Center (CSSC).

The Zimmer ROSA robot is used to accurately execute a customized approach to each patient and when combining Persona IQ smart implant, patients can continue to benefit from advances in care delivery far beyond the day of care.

James B. Chen MD

Peer Reviewed Publications


Community Orthopedic Medical Group

26401 Crown Valley Parkway,
Suite 101
Mission Viejo, CA 92691

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Mon – Fri : 8am – 5pm