OUR PHYSICIANS
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Dr. Annette Billings
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Dr. Billings is a board-certified, fellowship-trained hand and upper extremity specialist in orthopedic surgery. She is a Fellow of the American Academy of Orthopedic Surgeons and is a member of the American Society for Surgery of the Hand. Her expertise and interest are treating conditions of the hand, wrist, elbow and arm.
A Utah native, Dr. Billings completed an undergraduate degree at the University of Pennsylvania, a medical degree at the University of Utah, a residency in orthopedic surgery at Loma Linda University Medical Center and a fellowship at LAC/USC Keck School of Medicine. Prior to pursuing her medical education, she taught nuclear engineering for the Navy at the Naval Nuclear Power School.
She loves the practice of medicine, spending time with her family, music, and yoga.
A Utah native, Dr. Billings completed an undergraduate degree at the University of Pennsylvania, a medical degree at the University of Utah, a residency in orthopedic surgery at Loma Linda University Medical Center and a fellowship at LAC/USC Keck School of Medicine. Prior to pursuing her medical education, she taught nuclear engineering for the Navy at the Naval Nuclear Power School.
She loves the practice of medicine, spending time with her family, music, and yoga.
Dr. Robert Klenck
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Dr. Klenck is a Board Certified Fellow of the American Academy of Orthopedic Surgeons. A front-runner in total joint replacement, Dr. Klenck’s main goal is to adopt techniques that allow patients the most rapid rehabilitation to their pre-arthritic state. Most of his patients can resume full activities without precautions, often including aggressive sports and work activities.
Born in Long Beach, CA, Dr. Klenck received his Bachelor’s Degree at California State University, Long Beach: a Master’s Degree in Organic Chemistry from the University of Arizona, and his M.D. degree from the University of Southern California. He completed his Internship and Residency at the L.A. County – U.S.C. Medical Center.
He began practicing in 1991, was admitted into the International Association of Orthopedic Surgeons, and was listed in the 2014 edition of The Leading Physicians of the World. Throughout his career, he has received many honors and awards, and co-authored nine scientific research papers, collaborating on others. He has invented and modified surgical instrumentation for the direct anterior approach to total hip replacement and was one of the first of a handful of doctors to utilize this technique.
Born in Long Beach, CA, Dr. Klenck received his Bachelor’s Degree at California State University, Long Beach: a Master’s Degree in Organic Chemistry from the University of Arizona, and his M.D. degree from the University of Southern California. He completed his Internship and Residency at the L.A. County – U.S.C. Medical Center.
He began practicing in 1991, was admitted into the International Association of Orthopedic Surgeons, and was listed in the 2014 edition of The Leading Physicians of the World. Throughout his career, he has received many honors and awards, and co-authored nine scientific research papers, collaborating on others. He has invented and modified surgical instrumentation for the direct anterior approach to total hip replacement and was one of the first of a handful of doctors to utilize this technique.
Dr. Sara Shirazi
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Dr. Sara Shirazi is a board certified podiatric surgeon treating both adult and pediatric patients. Following podiatry school at the California School of Podiatric Medicine, Dr. Shirazi completed an intensive residency at Saint Elizabeth’s Medical Center/Tufts University in Boston, MA where she subspecialized in revisional and reconstructive foot and ankle surgery.
During her tenure in Boston, Dr. Shirazi trained under podiatry and orthopedic team physicians for the Celtics, Bruins, Patriots, Red Sox and the Boston Ballet. She was elected Editor-in-Chief for the National Foot and Ankle Review and has authored numerous research publications. She was also elected as the first resident member on the Massachusetts State Foot and Ankle Society Board of Podiatry.
Dr. Shirazi provides comprehensive medical and surgical care for a wide spectrum of foot and ankle conditions including tendon, ligament, and joint injuries; fractures; wound care; heel pain; flat feet; bone spurs; arthritis; bunions; hammertoes; ingrown toenails, nail restoration, and fungal nails; and plantar warts. She is uniquely trained to detect early stages of diseases including diabetes, arthritis, tumors, and cardiovascular diseases.
In her free time, Dr. Shirazi is devoted to medical missions. She has traveled to the Amazon Jungle in Peru and Ecuador, providing treatment to patients with limited access to proper care.
During her tenure in Boston, Dr. Shirazi trained under podiatry and orthopedic team physicians for the Celtics, Bruins, Patriots, Red Sox and the Boston Ballet. She was elected Editor-in-Chief for the National Foot and Ankle Review and has authored numerous research publications. She was also elected as the first resident member on the Massachusetts State Foot and Ankle Society Board of Podiatry.
Dr. Shirazi provides comprehensive medical and surgical care for a wide spectrum of foot and ankle conditions including tendon, ligament, and joint injuries; fractures; wound care; heel pain; flat feet; bone spurs; arthritis; bunions; hammertoes; ingrown toenails, nail restoration, and fungal nails; and plantar warts. She is uniquely trained to detect early stages of diseases including diabetes, arthritis, tumors, and cardiovascular diseases.
In her free time, Dr. Shirazi is devoted to medical missions. She has traveled to the Amazon Jungle in Peru and Ecuador, providing treatment to patients with limited access to proper care.
Dr. Aaron Gipsman
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Dr. Gipsman earned his M.D. from the Chicago Medical School at Rosalind Franklin University of Medicine and Sciences and was inducted into the Alpha Omega Alpha and the Gold Humanism honor societies. He completed his orthopedic surgery residency at the Los Angeles County + University of Southern California in 2020. He then completed his Sports Medicine Fellowship at the prestigious New York University, where he also served as an assistant team physician for the New Jersey Devils NHL hockey team.
Dr. Gipsman treats complex shoulder, hip, and knee injuries, including performing advanced cartilage restoration procedures, ligament reconstruction, and hip arthroscopy. He also treats orthopedic trauma, as well as hip, knee, and shoulder arthritic conditions with total joint replacements.
Additionally, he earned M.S. degrees in Biomedical Sciences and Healthcare Administration and Management. He has authored many papers in top orthopedic journals, presented at national conferences, and written textbook chapters with a focus on sports medicine.
Dr. Gipsman treats complex shoulder, hip, and knee injuries, including performing advanced cartilage restoration procedures, ligament reconstruction, and hip arthroscopy. He also treats orthopedic trauma, as well as hip, knee, and shoulder arthritic conditions with total joint replacements.
Additionally, he earned M.S. degrees in Biomedical Sciences and Healthcare Administration and Management. He has authored many papers in top orthopedic journals, presented at national conferences, and written textbook chapters with a focus on sports medicine.
Dr. Bijan Ameri
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Dr. Bijan Ameri is an orthopaedic spine surgeon from Yale University with expertise in both surgical and non-surgical treatments of the neck and back. Dr. Ameri’s philosophy is to utilize conservative options for his patients to avoid any unnecessary treatments. If patients require surgery after these non-operative options, he can offer them a broad spectrum of spine surgeries including the most modern techniques.
A Southern California native, Dr. Ameri attended University of California, Irvine for undergraduate studies in Biological Sciences. He then relocated to attend medical school at Touro University Nevada. Upon graduating at the top of his medical school class, Dr. Ameri again relocated to Fort Lauderdale, FL where he completed residency training in orthopaedic surgery at Broward Health, a medical center with level 1 trauma designation. Dr Ameri was immersed in orthopaedic care and techniques during his training with world renowned faculty including Dr. Harry Shufflebarger, a prominent scoliosis surgeon credited with many of the techniques used in modern spine surgery. Dr. Ameri served as the Chief Resident and won the Resident of the Year and Professionalism in Medicine Awards. Dr. Ameri also published multiple scientific research articles, book chapters, and was even a recipient of research grant funding.
Following the completion of his orthopaedic surgery residency, Dr. Ameri further advanced his training by completing the combined neurosurgical and orthopaedic comprehensive spine surgery fellowship at the prestigious Yale University School of Medicine. There, Dr. Ameri’s thorough fellowship training included treatment of degenerative, traumatic, neoplastic and infectious conditions in addition to spinal deformity and sacroiliac disease. This training encompassed both a tertiary care center and a dedicated spine surgery institute, preparing Dr. Ameri to treat an extremely diverse range of spine pathology. This broad scope of training also allows Dr. Ameri to utilize conservative and surgical approaches, including everything from endoscopic and minimally invasive approaches to traditional open surgical techniques, all depending on the individual needs of each patient.
Dr. Ameri treats both simple and complex neck and back disorders which often involve sport and work injuries in addition to traditional trauma-related causes. He thrives on overcoming the complex challenges faced in orthopaedic and spine surgery. Dr. Ameri’s meticulous attention to detail rivals only his dedication to helping his patients recover from their ailments and return to their favorite activities. With rigorous academic medical training and professional bedside manner, Dr. Ameri ensures his patients receive the absolute best orthopaedic and spine care available.
A Southern California native, Dr. Ameri attended University of California, Irvine for undergraduate studies in Biological Sciences. He then relocated to attend medical school at Touro University Nevada. Upon graduating at the top of his medical school class, Dr. Ameri again relocated to Fort Lauderdale, FL where he completed residency training in orthopaedic surgery at Broward Health, a medical center with level 1 trauma designation. Dr Ameri was immersed in orthopaedic care and techniques during his training with world renowned faculty including Dr. Harry Shufflebarger, a prominent scoliosis surgeon credited with many of the techniques used in modern spine surgery. Dr. Ameri served as the Chief Resident and won the Resident of the Year and Professionalism in Medicine Awards. Dr. Ameri also published multiple scientific research articles, book chapters, and was even a recipient of research grant funding.
Following the completion of his orthopaedic surgery residency, Dr. Ameri further advanced his training by completing the combined neurosurgical and orthopaedic comprehensive spine surgery fellowship at the prestigious Yale University School of Medicine. There, Dr. Ameri’s thorough fellowship training included treatment of degenerative, traumatic, neoplastic and infectious conditions in addition to spinal deformity and sacroiliac disease. This training encompassed both a tertiary care center and a dedicated spine surgery institute, preparing Dr. Ameri to treat an extremely diverse range of spine pathology. This broad scope of training also allows Dr. Ameri to utilize conservative and surgical approaches, including everything from endoscopic and minimally invasive approaches to traditional open surgical techniques, all depending on the individual needs of each patient.
Dr. Ameri treats both simple and complex neck and back disorders which often involve sport and work injuries in addition to traditional trauma-related causes. He thrives on overcoming the complex challenges faced in orthopaedic and spine surgery. Dr. Ameri’s meticulous attention to detail rivals only his dedication to helping his patients recover from their ailments and return to their favorite activities. With rigorous academic medical training and professional bedside manner, Dr. Ameri ensures his patients receive the absolute best orthopaedic and spine care available.
Dr. Kamran Movassaghi
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Kamran Movassaghi, M.D., is a fellowship-trained joint replacement surgeon specializing in advanced hip and knee replacements. He has extensive training in minimally invasive approaches to hip and knee allowing for expedited recovery after replacement surgery. He also has significant experience performing total hip and knee replacements utilizing computer and robotic navigation, complex revision joint reconstruction, lower extremity deformities and fractures, as well as nonsurgical treatment of the hip and knee.
A Los Angeles native, Dr. Movassaghi attended the University of California, Los Angles for his undergraduate education. He then earned his medical degree from Rush University in Chicago, which allowed him the opportunity to work with their nationally recognized orthopedic department. After completing his orthopedic surgery residency at UCSF Fresno, Dr. Movassaghi underwent an additional year of fellowship training in adult reconstruction at USC-Keck Medical Center in Los Angeles. Throughout his career, he has published or presented over 50 peer-reviewed articles in the areas of hip and knee reconstruction, orthopedic trauma, and quality of life improvement after surgery.
Dr. Movassaghi recognizes the incapacitating effects of degenerative joint disease in the hip and knee and wants to get his patients back to enjoying their life as early as possible. He utilizes the most current research and techniques with a team-based decision-making approach to enhance his patient outcomes to reach their functional goals and optimize quality of life.
Outside of orthopedics, Dr. Movassaghi enjoys traveling, music, and the outdoors. In his spare time, you can find him surfing along the coast or hiking in the nearby mountains.
A Los Angeles native, Dr. Movassaghi attended the University of California, Los Angles for his undergraduate education. He then earned his medical degree from Rush University in Chicago, which allowed him the opportunity to work with their nationally recognized orthopedic department. After completing his orthopedic surgery residency at UCSF Fresno, Dr. Movassaghi underwent an additional year of fellowship training in adult reconstruction at USC-Keck Medical Center in Los Angeles. Throughout his career, he has published or presented over 50 peer-reviewed articles in the areas of hip and knee reconstruction, orthopedic trauma, and quality of life improvement after surgery.
Dr. Movassaghi recognizes the incapacitating effects of degenerative joint disease in the hip and knee and wants to get his patients back to enjoying their life as early as possible. He utilizes the most current research and techniques with a team-based decision-making approach to enhance his patient outcomes to reach their functional goals and optimize quality of life.
Outside of orthopedics, Dr. Movassaghi enjoys traveling, music, and the outdoors. In his spare time, you can find him surfing along the coast or hiking in the nearby mountains.
Dr. Rodd Rezvani
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Dr. Rodd Rezvani has trained in both Anesthesiology and Interventional Pain Medicine. He is currently double board certified in Anesthesiology and Interventional Pain Medicine.
Dr. Rezvani is a Southern California native. A son of immigrant parents, a focus on education and a strong work ethic was instilled in him throughout his youth in Orange County. After completing his undergraduate degree at the University of California Irvine, he went on to complete medical school at Ross University School of Medicine graduating with High Honors. Pursuing a career in Anesthesiology, he completed his residency at Rush University Medical Center in Chicago, IL (U.S. News & World Report’s 2022-2023 Best Hospitals Honor Roll). Furthermore, his dedication to training allowed him to be chosen as Chief Resident in his final year.
Seeing how interventional pain medicine can significantly change patient’s quality of life, he decided to stay at Rush University Medical Center to complete fellowship training in pain medicine. Under the tutelage of physician leaders in the field, Dr. Rezvani was trained in cutting edge therapies including spinal cord stimulation and minimally invasive spine procedures. During his rigorous training, he has come to hone his diverse skillset including epidural steroid injections, ultrasound guided nerve injections/therapies, joint injections, and radiofrequency ablation.
Returning to Southern California, Dr. Rezvani strives to provide the highest quality evidenced based medicine for his patients. His training has given him a vast experience in managing patients pre-operatively, intra-operatively and post-operatively. Dr. Rezvani’s goal is to utilize interventional techniques and approaches while decreasing patient’s reliance on oral medications. He believes working with a multi-disciplinary team that involves not only himself but surgeons, primary care doctors, specialists, psychotherapy, physical therapists and practioners of non traditional western medicine can provide the best well rounded patient care.
Dr. Rezvani is a Southern California native. A son of immigrant parents, a focus on education and a strong work ethic was instilled in him throughout his youth in Orange County. After completing his undergraduate degree at the University of California Irvine, he went on to complete medical school at Ross University School of Medicine graduating with High Honors. Pursuing a career in Anesthesiology, he completed his residency at Rush University Medical Center in Chicago, IL (U.S. News & World Report’s 2022-2023 Best Hospitals Honor Roll). Furthermore, his dedication to training allowed him to be chosen as Chief Resident in his final year.
Seeing how interventional pain medicine can significantly change patient’s quality of life, he decided to stay at Rush University Medical Center to complete fellowship training in pain medicine. Under the tutelage of physician leaders in the field, Dr. Rezvani was trained in cutting edge therapies including spinal cord stimulation and minimally invasive spine procedures. During his rigorous training, he has come to hone his diverse skillset including epidural steroid injections, ultrasound guided nerve injections/therapies, joint injections, and radiofrequency ablation.
Returning to Southern California, Dr. Rezvani strives to provide the highest quality evidenced based medicine for his patients. His training has given him a vast experience in managing patients pre-operatively, intra-operatively and post-operatively. Dr. Rezvani’s goal is to utilize interventional techniques and approaches while decreasing patient’s reliance on oral medications. He believes working with a multi-disciplinary team that involves not only himself but surgeons, primary care doctors, specialists, psychotherapy, physical therapists and practioners of non traditional western medicine can provide the best well rounded patient care.
Dr. Graeme Matthewson
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Graeme Matthewson, M.D. is a fellowship-trained orthopedic surgeon specializing in sports medicine with advanced fellowship training and expertise in shoulder, hip, knee, and ankle arthroscopy, cartilage restoration as well as comprehensive shoulder reconstruction.
Originally from Winnipeg, Canada, Dr. Matthewson was introduced to medicine and orthopedic surgery after suffering several powerlifting and hockey-related orthopedic injuries. In order to restore his health, Dr. Matthewson began strength, conditioning and musculoskeletal training and rehabilitation medicine.
Following the completion of his Bachelor of Science, Dr. Matthewson matriculated and graduated from the University of Calgary Medical School, where Dr. Matthewson graduated with his Doctor of Medicine, ranking at the top of his class.
Following medical school, Dr. Matthewson matriculated and completed an orthopedic residency at the University of Manitoba. Upon successful completion of orthopedic residency, Dr. Matthewson relocated to Southern California to complete fellowship training in sports medicine at the University of California, Los Angeles affiliated sports medicine fellowship program at Southern California Orthopedic Institute, under the guidance of Stephen Snyder, M.D., an innovator of surgical technique for the shoulder, and founder of the International Shoulder Arthroscopy Study Group. Furthermore, while training at Southern California Orthopedic Institute, Dr. Matthewson trained with Richard Ferkel, M.D., and Mark Getelman, M.D., the past President of the Arthroscopic Association of North America. As a fellow, Dr. Matthewson gained expertise in the latest procedures for tendon, ligament, and cartilage restoration. Upon completion of a fellowship at Southern California Orthopedic Institute, Dr. Matthewson attained further training in shoulder and elbow arthroplasty in San Francisco, California.
Following the completion of his second fellowship, Dr. Matthewson trained in complex sports and shoulder reconstruction at the Pan Am Clinic in Winnipeg, Canada under Peter Macdonald, M.D., former President of the American Shoulder and Elbow Society.
During his orthopedic residency and fellowship, Dr. Matthewson published and presented scientific research papers nationally and internationally.
Dr. Matthewson practices patient-centered and outcome-focused musculoskeletal medicine. Dr. Matthewson firmly believes that surgery is only a part of the picture and that recovery requires open and honest communication between the patient, therapist, and surgeon in order to restore the patient to their full ability.
In the case where surgery is necessary, Dr. Matthewson’s surgical techniques include minimally invasive, effective, and safe techniques tailored for each patient to minimize complications and recovery time and to optimize the patient outcome.
In his free time, Dr. Matthewson enjoys staying active and honing his orthopedic surgery skills by practicing the latest techniques in rehabilitation, strength training and conditioning. Furthermore, Dr. Matthewson enjoys exploring Southern California’s beaches and hiking trails with his family.
Originally from Winnipeg, Canada, Dr. Matthewson was introduced to medicine and orthopedic surgery after suffering several powerlifting and hockey-related orthopedic injuries. In order to restore his health, Dr. Matthewson began strength, conditioning and musculoskeletal training and rehabilitation medicine.
Following the completion of his Bachelor of Science, Dr. Matthewson matriculated and graduated from the University of Calgary Medical School, where Dr. Matthewson graduated with his Doctor of Medicine, ranking at the top of his class.
Following medical school, Dr. Matthewson matriculated and completed an orthopedic residency at the University of Manitoba. Upon successful completion of orthopedic residency, Dr. Matthewson relocated to Southern California to complete fellowship training in sports medicine at the University of California, Los Angeles affiliated sports medicine fellowship program at Southern California Orthopedic Institute, under the guidance of Stephen Snyder, M.D., an innovator of surgical technique for the shoulder, and founder of the International Shoulder Arthroscopy Study Group. Furthermore, while training at Southern California Orthopedic Institute, Dr. Matthewson trained with Richard Ferkel, M.D., and Mark Getelman, M.D., the past President of the Arthroscopic Association of North America. As a fellow, Dr. Matthewson gained expertise in the latest procedures for tendon, ligament, and cartilage restoration. Upon completion of a fellowship at Southern California Orthopedic Institute, Dr. Matthewson attained further training in shoulder and elbow arthroplasty in San Francisco, California.
Following the completion of his second fellowship, Dr. Matthewson trained in complex sports and shoulder reconstruction at the Pan Am Clinic in Winnipeg, Canada under Peter Macdonald, M.D., former President of the American Shoulder and Elbow Society.
During his orthopedic residency and fellowship, Dr. Matthewson published and presented scientific research papers nationally and internationally.
Dr. Matthewson practices patient-centered and outcome-focused musculoskeletal medicine. Dr. Matthewson firmly believes that surgery is only a part of the picture and that recovery requires open and honest communication between the patient, therapist, and surgeon in order to restore the patient to their full ability.
In the case where surgery is necessary, Dr. Matthewson’s surgical techniques include minimally invasive, effective, and safe techniques tailored for each patient to minimize complications and recovery time and to optimize the patient outcome.
In his free time, Dr. Matthewson enjoys staying active and honing his orthopedic surgery skills by practicing the latest techniques in rehabilitation, strength training and conditioning. Furthermore, Dr. Matthewson enjoys exploring Southern California’s beaches and hiking trails with his family.
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Whatever your orthopedic needs, we are sure that our staff members can serve you well and do everything possible to get you back to living the life you want to live. Call 626-517-0022 or Contact Us today to make an appointment.
