Meet Our Physicians

Herbert D. Huddleston, MD

Medical Director, Valley Hip & Knee Institute

Herbert D. Huddleston, MD is board-certified in orthopaedic surgery and fellowship-trained in surgery of the hip and knee. As Medical Director of the Valley Hip & Knee Institute, Dr. Huddleston helps to ensure the best possible outcomes for all of the Institute’s patients. He utilizes innovative and minimally invasive procedures for joint replacement and repair procedures.

Dr. Huddleston has published research on the causes of failure of cemented joint replacements, as well as leg length techniques and other issues in hip replacement. He has taught and lectured around the country.

A native of South Africa, Dr. Huddleston graduated from medical school at the University of Capetown. He trained in general surgery in England, did his residency training at the Albert Einstein College of Medicine in New York City, and completed his fellowship in hip and knee replacement surgery at the University of California, Los Angeles.

Dr. Huddleston is a Fellow of the Royal College of Surgeons of England, a Fellow of the American Academy of Orthopaedic Surgeons, a Fellow of the International College of Surgeons, and a member of the American Association of Arthritic Hip and Knee Surgeons.

Umesh T. Bhagia, MD

Umesh T. Bhagia, MD specializes in orthopaedic surgery. He has been a member of Valley Presbyterian Hospital’s Medical Staff since September 2017.

Dr. Bhagia received his medical degree from Baroda Medical College and completed his residency in orthopaedic surgery at Medical College of Georgia in Augusta, Georgia. He later completed his fellowship in reconstruction joint replacement at Mayo Clinic in Scottsdale, Arizona.

He is an active member of the American Academy of Orthopaedic Surgeons, California Orthopaedic Association, American Association of Physicians from India, and American Association of Hip & Knee Surgeons.

Dr. Bhagia’s practice is focused on hip, knee and shoulder replacement surgeries. As an orthopaedic surgeon, Dr. Bhagia takes pride in restoring the quality of life of his patients. He puts compassionate care first and stays informed on the latest techniques in the field, including anterior hip replacements, partial and custom knee replacements, and short stay joint replacements. He also believes it is important to discuss in detail diagnosis and treatment options with the patient and family to ensure the best decisions and recovery for his patients.

Shahin S. Rad, MD

Shahin S. Rad, MD is a board-certified orthopaedic surgeon. He is fellowship-trained in hip and knee replacement. He attended the University of California Los Angeles (UCLA), and graduated with honors and Phi Beta Kappa with a Bachelor’s degree in psychobiology. He received his Doctorate of Medicine at the Chicago Medical School, where he was elected to the Alpha Omega Alpha Medical Honor Society.

Dr. Rad completed his internship at the prestigious Brown University in Rhode Island, and his orthopaedic surgery residency at McLaren-Flint through Michigan State University. Dr. Rad also served as the only Chief resident during his residency. Throughout his residency, he was trained extensively in primary total knee replacement with patient specific custom implants, partial knee replacement, revision total knee replacement, and primary and revision total hip replacement, including direct anterior hip replacement, as well as shoulder replacement.

Dr. Rad pursued his passion, and completed a fellowship in joint replacement at the University of Southern California. His training included primary total knee replacement, primary total hip replacement, revision total knee anthroplasty, and revision total knee arthroplasty. He is trained in Mako Robotic partial knee replacement, robotic total hip replacement, and computer navigation total knee and hip replacement. During his fellowship, Dr. Rad also served as a clinical instructor in orthopaedic at the University of Southern California, training orthopaedic residents and medical students.

Dr. Rad is active in orthopaedic surgery research and has presented his work at numerous local, national and international meetings. He has published articles in prestigious publications including the Journal of Bone & Joint Surgery, Bone and Joint Journal (formerly British Journal of Bone & Joint Surgery), Journal of Arthroscopy, and the American Journal of Sports Medicine, among others. He has also published many instructional course lectures, and has been recognized for his research with the Michigan State University annual research award.

He is a member of the California Orthopaedic Association and American Association of Orthopaedic Surgeons, as well as a fellow of the American Association of Hip and Knee Surgeons.

Jonathan M. Blau, MD

Jonathan M. Blau, MD specializes in orthopaedic surgery. He has been a member of Valley Presbyterian Hospital’s Medical Staff since September 2017.

Dr. Blau received his medical degree from Keck School of Medicine of the University of Southern California and completed his residency in orthopaedic surgery at Ohio State University in Columbus, Ohio. He later completed his fellowship in ­­­­­­­­­­­­­­­­adult reconstruction at the University of California Davis Medical Center in Sacramento, California.

His practice focuses on both primary and revision hip and knee replacement surgery. Dr. Blau is passionate about providing his patients with the highest quality of care by staying up to date on the latest medical innovations while also focusing his attention on preventive care in the outpatient setting. He devotes much of his time to educating his patients about their conditions, treatment options, and outcomes, as he believes the best patient care is only possible when a strong partnership is formed between the surgeon and patient.

Clive M. Segil, MD, FRCS, FACS

Clive M. Segil, MD, FRCS, FACS specializes in orthopaedic surgery. He has been a member of Valley Presbyterian Hospital’s Medical Staff since February 2017.

Dr. Segil received his medical degree from University of Witwatersrand in Johannesburg, South Africa and completed his residency in general surgery as well as orthopaedic surgery at Johannesburg General Hospital. He later completed his fellowships in hip surgery at the Center for Hip Surgery in Wrightington, England and Spine Surgery at Toronto East General and Orthopaedic Hospital at the University of Toronto. He has been in practice for over 30 years and was fortunate enough to learn hip replacement surgery from the original developer Dr. John Charnley.

He is an active member of several associations including the American Board of Orthopaedic Surgery, Fellow of the American College of Surgeons, Arthritis Foundation, American Academy of Neurological and Orthopaedic Surgeons, and many more.

Dr. Segil has lectured extensively on the subject of hip and knee problems throughout the world. He is well respected by his peers and the thousands of patients he has taken care of. He speaks multiple languages, including Spanish and Hebrew.

Daniel C. Allison, MD, FACS, MBA

Daniel C. Allison, MD, FACS, MBA, is a nationally recognized orthopaedic surgeon specializing in advanced joint reconstruction. Dr. Allison received his medical degree with honors from Baylor College of Medicine and completed his residency in orthopaedic surgery at University of Southern California in Los Angeles. He then completed his training in musculoskeletal oncology and pelvic reconstruction at University of Southern California Los Angeles.

Dr. Allison’s training and experience in orthopaedic oncology provides him with a unique background to manage even the most challenging of joint replacement scenarios. Dr. Allison's philosophy is to treat all patients like family members. He is dedicated to providing the best care available anywhere.

Dr. Allison and his team treat a range of joint conditions, including degenerative arthritis, post-traumatic arthritis, failed prior joint replacement, periprosthetic fractures and more. He uses the direct anterior approach to hip replacement. He has extensive experience in revision hip and knee replacement. Dr. Allison was also the lead designer for a very successful primary hip replacement system and revision knee replacement system. He has authored numerous peer reviewed journal articles and book chapters on complex joint reconstruction issues.

With his extensive experience, Dr. Allison and his team operate on the most complex joint replacement and revision cases on a daily basis.