Why We Are Different


Treatment: Hip Arthritis

Prem N. Ramkumar, MD, MBA

Prem N. Ramkumar, MD, MBA

Orthopedic Surgeon, Joints & Sports Medicine

Dr. Prem N. Ramkumar is a dual fellowship-trained orthopedic surgeon with focused expertise in hip and knee conditions, from sports medicine & arthroscopy to joint replacement & adult reconstruction.

In-network with

Commons Clinic is NOT in-network for the following BlueShield of California plans: Covered CA or IFP, Medi-Cal, Tandem, HPN, EPPO, or CalPERS Gold. Anthem excludes HMO and individual Medicare Advantage plans. Please contact us to discuss alternative payment options.

About the doctor

TREATMENTS AND SERVICES

Knee Arthroscopy
Total Knee Replacement Surgery
Hip Arthroscopy
Total Hip Replacement
ACL Surgery
Cartilage Repair
Partial Knee Replacement Surgery
Hip Resurfacing
Show all

Prem N. Ramkumar, MD, MBA is a dual fellowship-trained orthopedic surgeon with focused expertise in hip and knee conditions, from sports medicine & arthroscopy to joint replacement & adult reconstruction. Dr. Ramkumar is proud to serve his hometown counties of Los Angeles and Orange County.

Education

He received his medical education and surgical training at Cleveland Clinic, Harvard/Brigham and Women’s Hospital, and Hospital for Special Surgery – the #1 ranked orthopedic hospital in the country. He was privileged to serve as Assistant Team Physician to the NBA’s Brooklyn Nets and MLS’ Red Bulls during his time at Hospital for Special Surgery.

He acquired his MBA from Cornell University’s campus at Cornell Tech campus in New York City to continue leveraging emerging technologies to improve the clinical practice of hip and knee conditions. Specifically, his research team is currently evaluating the impact of a combined deep learning, computer vision, and segmentation algorithm to automate the detection and quantification of abnormal hip and knee anatomy with preoperative CT scans.

Medical Approach

Dr. Ramkumar’s core value is caring for patients. He does so by treating his patients like he would his own family, listening to them, and understanding their priorities in life. In return, Dr. Ramkumar will always be transparent about the realities and evidence surrounding a patient’s underlying condition and treatment options.

It is not common for orthopedic surgeons to be dual fellowship trained. Dr. Ramkumar specifically chose to pursue two hip and knee fellowships to be a comprehensive, one-stop shop for any patient with a hip or knee condition – from arthroscopy and repair to resurfacing and replacement. He appreciates the difficulty of navigating the world of healthcare and finding access to the right doctor who can actually help. His patient-centered and dual-training focus on the hip and knee affords him the ability to expand his medical and surgical “toolbox” to more finely tailor the treatment plan to the patient’s specific problem and personal goals.

Specialties

Dr. Ramkumar has expertise in the following surgical procedures: hip arthroscopy, hip resurfacing, ACL reconstruction, cartilage repair, knee osteotomy, partial knee replacement, total knee replacement, total hip replacement, revision joint replacement, robotic joint replacement, direct anterior hip replacement.

Beyond clinical expertise, Dr. Ramkumar is renowned as both a clinician-scientist and editorial columnist. In both capacities, he has extensively analyzed and described the impact of orthopedic hip and knee conditions from medical, socioeconomic, political, and technological perspectives. Since he first began studying the biomechanics and material properties of modern total hip replacements at the age of 12 at Los Angeles Orthopaedic Hospital, Dr. Ramkumar’s commitment and passion for studying the hip and knee has only exponentially grown.

Awards & Recognitions

To date, he has authored 135 peer-reviewed publications, written 11 textbook chapters, published nine articles in Forbes (among other circulations), received four institutional grants, lectured nationally and internationally on over 40 occasions, served on the editorial board for the Journal of Arthroplasty, reviewed for every major hip and knee journal (Journal of Bone and Joint Surgery, American Journal of Sports Medicine, Bone and Joint Journal, Arthroscopy, Journal of Arthroplasty), won national awards for his commitment to research and policy from both the American Orthopaedic Society for Sports Medicine and the American Association of Hip and Knee Surgeons, holds three orthopedic patents, contributed to multiple design teams for novel implants and technologies sponsored by industry-leading orthopedic manufacturers, and established the world’s first laboratory dedicated to evaluating the applications of artificial intelligence in orthopedic surgery.

When he is not in the office or the operating room, Dr. Ramkumar enjoys being a full-time father (girl dad and dog dad), husband, and unabashed Lakers fan. As a former nationally ranked collegiate tennis player, he enjoys recreational sports and is particularly excited to be back home exploring the beautiful outdoors our great state has to offer.

Additional Contact Information:

Call: 562-348-4588 or 562-633-3787
Text: 562-231-6505
Email: info@premramkumar.com

For more information about Dr. Ramkumar’s practice and protocols, visit his personal website at: https://ochipandknee.com/

Boards, Awards & Education


Baylor College of Medicine

Medical School

Cleveland Clinic

Residency – Orthopedics

Harvard/Brigham and Women’s Hospital

Fellowship

Hospital for Special Surgery

Fellowship

Cornell University – Tech Campus

Masters in Business Administration

Philip D. Wilson Award for Excellence in Orthopaedic Surgery Research

2023 Recipient

American Orthopaedic Society for Sports Medicine

Herodicus Award

American Association of Hip and Knee Surgeons

Health Policy Fellowship

Cleveland Clinic Foundation

Resident/Fellow Excellence in Teaching Award

Meet Dr. Ramkumar

Watch video
Long Beach – Douglas Park Clinic
Lakewood Clinic

Testimonials

The patient perspective

Check out what Dr. Ramkumar’s patients have to say about their treatment experiences and results.

Dr. Ramkumar walked into my room with his hand out and said ‘Hi, Coral. I’m Prem’… After that humble introduction, I knew I was in the right hands for this hip replacement! For the first time in 4 years, I can walk without a cane and I have no pain. I even had a first being able to stand up straight at an x-ray machine. I cried and shared that with him.
Coral October 2024
The first time I met Dr. Ramkumar, I felt comfortable and at ease. I came to him with “knee pain” but after being assessed and taking a few x-rays, he quickly informed me that the issue was not my knee but was actually my hip. My experience with him has been nothing short of amazing…The hip impingement surgery went well and recovery was better than I expected…
Raenisha L October 2024
Dr. Ramkumar performed a total left knee reconstruction on my mom one month ago. He was very professional by explaining it was a high risk complicated surgery due to her diabetes. Thankfully everything went well and my mom is healing good day by day. We are very pleased of Dr. Ramkumar’s amazing, skilled and dedicated work! Definitely recommend!
Adrian R September 2024
I am fortunate to have Dr. Prem Ramkumar as my orthopedic surgeon. He accurately diagnosed my issue and was successful in surgically repairing it… After my five years of severe pain, during which I incurred multiple surgeries, shots, and pain pills, I am finally back to my active lifestyle. I am also impressed by how nice his office is and the professionalism of his staff.
Glenn G September 2024
After several doctors could not figure out my history of symptoms and pain, I went to Dr. Prem N Ramkumar, who took the time to discover this rare and unique condition I had been living with. Over the years, I gave my blood, sweat, and tears to this injury. I highly recommend Dr. Prem N Ramkumar to anyone needing Ischiofermoral Impingement decompression and sciatic neuroplasty surgery; I cannot speak highly enough of his and his staff’s care.
Sheree A October 2024

For more information about about Dr. Ramkumar’s practice and protocols, visit his personal website at: https://ochipandknee.com/

Latest ARTICLES


Total joint replacement surgery restores mobility and relieves pain by replacing damaged joints with artificial ones, improving mobility. Learn more about the procedure.

Total Joint Replacement Surgery 101

14 min read
Total joint replacement surgery restores mobility and relieves pain by replacing damaged joints with artificial ones, improving mobility. Learn more about the procedure.

No locations found.

Christopher Combs, MD

Christopher Combs, MD

Orthopedic Surgeon, Joints & Sports Medicine

Dr. Combs is a board-certified general orthopedic surgeon.

In-network with

Commons Clinic is NOT in-network for the following BlueShield of California plans: Covered CA or IFP, Medi-Cal, Tandem, HPN, EPPO, or CalPERS Gold. Anthem excludes HMO and individual Medicare Advantage plans. Please contact us to discuss alternative payment options.

About the doctor

TREATMENTS AND SERVICES

Total Hip Replacement
Total Joint Replacements
Knee Osteoarthritis
Total Knee Replacement Surgery
Shoulder Osteorthritis
Show all

Christopher Combs, MD, obtained his undergraduate degree at Wabash College, where he graduated summa cum laude. He attended medical school at Washington University in St. Louis, graduating with honors. He completed his internship and orthopedic surgical residency at Harbor-UCLA Medical Center, serving as chief resident.

Dr. Combs is board-certified in general orthopedics. He holds privileges at Long Beach Memorial and Lakewood Regional Medical Center. His lone interest is Orthopedic surgery.

Boards, Awards & Education


Washington University

Medical School

Harbor-UCLA Medical Center

Orthopedic Surgical Residency

Testimonials

The patient perspective

Check out what Dr. Combs’s patients have to say about their treatment experiences and results.

Dr. Combs is very good doctor!! He made me feel comfortable about getting a hip replacement. Excellent bed side manner. He answered all my questions and he was very professional!
Dawn A
I have been suffering from excruciating pain in my shoulder for the past 4 months. I went to see Dr. Christopher Combs and had hydrocortisone injection…This is the best decision I made.
Manjula R
The entire office staff and nurses are very helpful. Dr. Combs is a nice and informative person. He’s thorough when giving advice.
Leticia F
I have been a patient of Dr. Combs for years. He repaired my meniscus in my right knee around 2006, then I tore it again…Dr. Combs is a get listener and honest.
Shari
Dr. Christopher Combs and his entire staff is awesome—I haven’t seen this kinda professional service in so many years…I wish it were more doctors and staff like them.
Lisa M May 2024

Latest Insights


Total joint replacement surgery restores mobility and relieves pain by replacing damaged joints with artificial ones, improving mobility. Learn more about the procedure.

Total Joint Replacement Surgery 101

14 min read
Total joint replacement surgery restores mobility and relieves pain by replacing damaged joints with artificial ones, improving mobility. Learn more about the procedure.

No locations found.

Andrew Wassef, MD

Andrew Wassef, MD

Orthopedic Surgeon, Joints

Dr. Andrew J. Wassef is a fellowship-trained, board-certified orthopedic surgeon specializing in joint replacement and the treatment of arthritic conditions affecting the hip, knee, and shoulder.

In-network with

Commons Clinic is NOT in-network for the following BlueShield of California plans: Covered CA or IFP, Medi-Cal, Tandem, HPN, EPPO, or CalPERS Gold. Anthem excludes HMO and individual Medicare Advantage plans. Please contact us to discuss alternative payment options.

About the doctor

TREATMENTS AND SERVICES

Total Knee Replacement Surgery
Knee Osteoarthritis
Hip Replacement
Total Hip Replacement
Shoulder Osteorthritis
Total Shoulder Replacement Surgery
Show all

Dr. Andrew J. Wassef is a fellowship-trained and board-certified orthopedic surgeon who specializes in joint replacement and the treatment of arthritic conditions affecting the hip, knee and shoulder.

Dr. Wassef is a native of Southern California who was raised in Long Beach, where he currently practices. He is the proud father of a son and daughter and has a father who is also an orthopedic surgeon and the senior partner of their practice. Growing up, he witnessed how fulfilling a career in orthopedics could be and understood the sacrifices needed to become a successful orthopedic surgeon. He attended Loyola Marymount University in Los Angeles and then went on to obtain his medical degree from Howard University in Washington, D.C., where his interest in orthopedics further flourished.

He completed his orthopedic residency training in Ohio at the University of Toledo Medical Center and returned to Los Angeles for an additional year of specialized fellowship training at the Joint Replacement Institute/LA Orthopedic Institute. In fellowship, he was extensively trained in the treatment of failed total joint replacements, now specializing in complex revision surgeries. He also focused on joint replacements in the younger population and cutting-edge techniques, including robotic-assisted total joint replacement. He continues to support the training of young surgeons and is now the associate director of the LAOI fellowship program.

Dr. Wassef is the medical director of the MemorialCare Joint Replacement Program at Long Beach Memorial Medical Center.  As medical director, Dr. Wassef partners with physician leadership at Long Beach Medical Center to advance innovative treatment options and undertake JRC’s ongoing mission to improve patient outcomes.  Dr. Wassef instills the rapid recovery philosophy pioneered by JRC that encourages patients to stand on the same day of surgery and participate in rehabilitation immediately following surgery. This philosophy results in faster and safer recovery, as well as improved patient outcomes.  He is also very active with the Center for Joint Replacement program at Lakewood Regional Medical Center, providing excellent orthopedic care for the Long Beach, Lakewood and surrounding communities.

Dr. Wassef recognizes that Mako Robotic-Arm Assisted Surgery is a revolutionary technology set to impact the future of joint replacement surgery and keep Long Beach Medical Center and Lakewood Regional Medical Center on the leading edge of surgical advancements. Mako Technology offers patients the latest surgical technology and precision surgery. In addition, Dr. Wassef teaches surgeons nationwide on the use of Mako and trains them to become proficient with robotic-assisted surgery. Dr. Wassef also is a member of the American Association of Hip and Knee Surgeons and has published many works in peer-reviewed journals.

His philosophy is based on providing his patients with the highest quality care possible and involving them in the decision-making process. He strives to care for all of his patients on a very personal level and appreciates all the relationships he makes with an individualized approach to caring for his patients.

Boards, Awards & Education


Howard University, Doctor of Medicine

Medical School

University of Toledo Medical Center

Orthopedic Residency

Joint Replacement Institute/LA Orthopedic Institute

Fellowship

American Association of Hip and Knee Surgeons

Meet Dr. Wassef

Watch video
Long Beach – Douglas Park Clinic
Lakewood Clinic

Testimonials

The patient perspective

Check out what Dr. Wassef’s patients have to say about their treatment experiences and results.

Dr. Wassef did a hip replacement this week and it went very well. He was so kind and professional and made me feel at ease…I would recommend Dr. Wassef to anyone needing a total hip replacement.
Bev M
Dr. Wassef and his team were so great. My THR went really smoothly and I felt informed and supported every step of the way. Dr. Wassef has such a lovely and calm bedside manner. Not to mention, my recovery went so well. Highly recommend!
Stephanie M
Dr. Wassef is AMAZING! He is so kind and caring, I’ve never meet a Dr like him. His whole team is the BEST! I feel so blessed that I was able to have him do my hip revision…
Lisa S
Dr. Wassef is an incredibly skilled surgeon who treats his patients like good friends. In less than 5 weeks after my hip replacement, I was back on the dance floor…If you’re considering hip, knee, or shoulder surgery, definitely get an opinion from Dr. Wassef.
Colleen L
Dr. Wassef did surgery on my mother after her previous surgery failed. He did a wonderful job and is very knowledgable, caring, kind, and responsible…
Franak

Latest Insights


Total joint replacement surgery restores mobility and relieves pain by replacing damaged joints with artificial ones, improving mobility. Learn more about the procedure.

Total Joint Replacement Surgery 101

14 min read
Total joint replacement surgery restores mobility and relieves pain by replacing damaged joints with artificial ones, improving mobility. Learn more about the procedure.

No locations found.

Tigran Garabekyan, MD

Tigran Garabekyan, MD

Orthopedic Surgeon, Sports Medicine

Dr. Garabekyan specializes in the treatment of hip, knee, and shoulder problems.

In-network with

Commons Clinic is NOT in-network for the following BlueShield of California plans: Covered CA or IFP, Medi-Cal, Tandem, HPN, EPPO, or CalPERS Gold. Anthem excludes HMO and individual Medicare Advantage plans. Please contact us to discuss alternative payment options.

About the doctor

TREATMENTS AND SERVICES

Hip Pain
Hip Dysplasia
Hip Instability
Hip Arthroscopy
Hip Preservation Surgery
Periacetabular Osteotomy
Derotational Femoral Osteotomy
Hamstring Tendon Repair
Hip Abductor Tendon Repair
Hip Replacement
Show all

Dr. Garabekyan specializes in the treatment of hip, knee, and shoulder problems, providing both joint-preserving and joint-replacement treatment options to patients of all ages.

Dr. Garabekyan’s special interests include the treatment of labral tears, articular cartilage injuries, femoroacetabular impingement, hip dysplasia, osteitis pubis, hip tendon injuries, and osteoarthritis. Proficient in both hip arthroscopy and realignment osteotomies of the pelvis and upper femur (PAO/DFO), he provides a uniquely holistic approach to the treatment of hip dysplasia. Dr. Garabekyan performs hip arthroscopy without a perineal post, enabling him to carry out simultaneous bilateral hip arthroscopy to minimize recovery time and get his patients back in the game faster.

Dr. Garabekyan has authored and co-authored numerous journal articles, textbook chapters, and online publications in orthopedic surgery. He has been an invited speaker at national and international conferences, presenting the results of his work. His research interests include improved characterization of acetabular dysplasia, the role of femoral torsion and acetabular version in borderline dysplasia, and capsular management during hip arthroscopy.

Dr. Garabekyan has served as the Assistant Team Physician for Marshall University, treating sports injuries in division one athletes and successfully returning them to play.

Languages: English, Armenian

Boards, Awards & Education


University of California at San Diego

Medical School

Marshall University

Residency

University of Colorado, School of Medicine

Fellowship in Hip Preservation

Orthopedic Trauma Association Award for Excellence in Teaching

Gold Humanism in Medicine Honor Society

American Board of Orthopaedic Surgery

Testimonials

The patient perspective

Check out what Dr. Garabekyan’s patients have to say about their treatment experiences and results.

Dr. Garabekyan did an amazing job with my PAO surgery! He saved my hip, and I could not have asked for a better surgery! He and his whole staff, including the office, made this journey worth it!
Natasha
Dr. Garabekyan and his staff are the best! If I could give 10 stars, I would. I’ve never had a doctor as caring and patient as Dr. Garabekyan…Choosing him to do the surgery was the best decision…
Aly
Dr. Garabekyan is an incredible surgeon. He performed a PAO on my daughter’s left hip and every single interaction with him…has included a level of precision, mastery, and kindness that is unparalleled.
Michael
Look no further, this is the doctor you want to see for your hip issues. I saw Dr. G almost a year ago after running my 25th marathon and developing pain in my right hip…The level of care and attention you get from this doctor is well above average!
Julia
Dr. Garabekyan is a brilliant hip surgeon. His surgical skills are over the top—insanely excellent. But his creativity, responsiveness, and genuine concern for his patients make this doctor among the very best doctors in medicine today.
Catherine

Latest Insights


Total joint replacement surgery restores mobility and relieves pain by replacing damaged joints with artificial ones, improving mobility. Learn more about the procedure.

Total Joint Replacement Surgery 101

14 min read
Total joint replacement surgery restores mobility and relieves pain by replacing damaged joints with artificial ones, improving mobility. Learn more about the procedure.

No locations found.

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