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Availability last updated 06/20/2025
Welcome to Keck Medicine of USC, Orthopaedic Surgery, providing cutting-edge care for complex shoulder, elbow, and knee injuries in the Boyle Heights neighborhood of Los Angeles, California. As sports medicine and orthopaedic specialists, we know how to treat musculoskeletal injuries effectively in athletes and nonathletes alike.
Our practice is built on three pillars –– excellence in clinical service, excellence in teaching, and excellence in research. We strive to be one of the preeminent orthopaedic centers in the world, offering high-quality care for various musculoskeletal problems, including sports injuries, joint stiffness, frozen shoulder, and knee injuries.
We take a conservative, minimally invasive treatment approach whenever possible. Instead of automatically prescribing surgery, we first exhaust other options like orthobiologic treatment and physical therapy.
Our practice is conveniently situated near the University of Southern California and features plenty of on-site parking. We never rush appointments and make time to understand each patient’s symptoms, concerns, and treatment goals.
Whether you’re recovering from a sports injury or have a child suffering from a knee deformity, our compassionate and knowledgeable providers can help. Call Keck Medicine of USC, Orthopaedic Surgery, today to schedule an appointment, or book your visit online.
Dr. Allison Ariniello, MD
Orthopedic Surgeon
1520 San Pablo Street
Suite 2000
Los Angeles, CA 90033
UC Davis Medical Center- Sacramento, California
Dr. Ryan Freshman
Orthopedic Surgeon
1520 San Pablo Street
Suite 2000
Los Angeles, CA 90033
Welcome to Keck Medicine of USC, Orthopaedic Surgery, providing cutting-edge care for complex shoulder, elbow, and knee injuries in the Boyle Heights neighborhood of Los Angeles, California. As sports medicine and orthopaedic specialists, we know how to treat musculoskeletal injuries effectively in athletes and nonathletes alike.
Our practice is built on three pillars –– excellence in clinical service, excellence in teaching, and excellence in research. We strive to be one of the preeminent orthopaedic centers in the world, offering high-quality care for various musculoskeletal problems, including sports injuries, joint stiffness, frozen shoulder, and knee injuries.
We take a conservative, minimally invasive treatment approach whenever possible. Instead of automatically prescribing surgery, we first exhaust other options like orthobiologic treatment and physical therapy.
Our practice is conveniently situated near the University of Southern California and features plenty of on-site parking. We never rush appointments and make time to understand each patient’s symptoms, concerns, and treatment goals.
Whether you’re recovering from a sports injury or have a child suffering from a knee deformity, our compassionate and knowledgeable providers can help. Call Keck Medicine of USC, Orthopaedic Surgery, today to schedule an appointment, or book your visit online.
Dr. Alexander Decilveo
Orthopedic Surgeon
1520 San Pablo Street
Suite 2000
Los Angeles, CA 90033
Murtaza Rizvi, MD
Orthopedic Surgeon
1509 Wilson Terrance
Glendale, CA 91206
Stepan Kasimian, M.D., is an orthopaedic surgeon with specialty training in complex spinal reconstruction and minimally invasive spine surgery. His primary interests include degenerative spine disease and spinal deformity. He has extensive experience in treating multiple spine disorders including disc herniations, spinal stenosis, spondylolisthesis, kyphosis, scoliosis, tumors, and spinal trauma in the cervical, thoracic, and lumbar spine.
Dr. Kasimian received his undergraduate degrees in Microbiology & Molecular Genetics and History from the University of California, Los Angeles. He completed his internship and residency in orthopaedic surgery at the Los Angeles County-USC Medical Center. After residency, Dr. Kasimian obtained further training in complex spinal reconstruction surgery at Cedars-Spinal Medical Center, Institute for Spinal Disorders.
Dr. Kasimian has presented his research at the International Meeting on Advanced Spine Techniques and has written a chapter on endoscopic thoracic disc herniations in a prominent spine textbook.
He is a member of the American Medical Association, Alpha Omega Alpha Honor Society, North American Spine Society, and the American Academy of Orthopedic Surgeons. In order to better serve his patients, his practice is located in Beverly Hills, Glendale, and Rancho Cucamonga and he maintains privileges in numerous hospitals including Cedars-Sinai Medical Center and Glendale Adventist Medical Center.
Dr. Stepan Kasimian, MD
Orthopedic Surgeon
1101 East Broadway
Suite 201
Glendale, CA 91206
Brandon A. Ortega, MD, is a fellowship-trained orthopedic spine surgeon who provides comprehensive and personalized spinal care to adults in Torrance and Long Beach, California. His dedication to helping each patient regain mobility, reduce pain, and improve their quality of life has earned the respect of everyone in the community struggling with neck and back pain.
Dr. Ortega received his medical degree from the Keck School of Medicine at the University of Southern California (USC) in Los Angeles. He stayed at USC to complete his orthopedic surgery residency, where he served as chief resident.
He pursued specialized training in spine surgery, completing a fellowship at the prestigious University of California, Davis. During his fellowship training, he learned traditional, minimally invasive, and image-guided techniques for treating complex adult and pediatric spinal deformities.
Dr. Ortega specializes in diagnosing and treating all cervical (neck), thoracic (mid-back), and lumbar (lower back) conditions. His areas of interest include motion-preserving and minimally invasive surgery and using advanced technologies like navigation, robotics, and endoscopy to improve patient safety and outcomes.
He has published many peer-reviewed articles and textbook chapters and presented his research at national and international medical conferences.
Taking a compassionate and patient-centered approach, Dr. Ortega believes in treating each patient as a person and tailoring treatment to meet their specific needs and goals.
He creates treatment plans that integrate nonoperative interventions, including lifestyle and activity changes, physical therapy, occupational therapy, and pain management. His whole-person approach addresses each patient’s spine condition, optimizing conservative treatments and helping them avoid surgery whenever possible.
Dr. Ortega welcomes new patients and looks forward to providing ongoing care to his current patients, working with them to restore an active, healthy life.
Dr. Brandon Ortega, MD
Orthopedic Surgeon
3828 Schaufele Ave
Suite 320
Long Beach , CA 90808
