G. Carleton Wallace, M.D. founded Corona Orthopaedic Associates in October of 1967. He attended Loma Linda University Medical School and completed post graduate training at White Memorial Hospital, Santa Fe Coast Lines Hospital and Orthopaedic Hospital in Los Angeles. Dr. Wallace served in the U.S. Army from 1957 to 1959. He was certified by the American Board of Orthopaedic Surgery in 1967 and has been a member of the American Academy of Orthopaedic Surgeons since 1969. He was certified by the Arthroscopy Board of North America in 1989. Dr. Wallace currently serves as Associate Clinic Professor in Orthopaedic Surgery and Rehabilitation at Loma Linda University Medical Center. He has a special interest in joint arthroscopy and total joint replacement.

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Richard L. Rouhe, M.D. joined Dr. Wallace at Corona Orthopaedic Associates in March of 1973. He received his medical degree at Loma Linda School of Medicine and completed his post graduate work at Riverside General Hospital and Loma Linda University Medical Center. Dr. Rouhe served in the U.S. Air Force from 1969 to 1971. He was certified by the American Board of Orthopaedic Surgeons in 1975 and has been a member of the American Academy of Orthopaedic Surgeons since 1978. Dr. Rouhe has a special interest in joint arthroscopy and total joint replacement.

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Bradley L. Baum, M.D. joined Corona Orthopaedic Associates in April of 1989. He received his medical degree at Loma Linda University Medical School and completed his post graduate work at Loma Linda University Medical Center and Riverside General Hospital. Dr. Baum also completed a Fellowship in Foot & Ankle surgery at The University of Washington, Harbor University Medical Center. He was certified by the American Board of Orthopaedic Surgeons in 1994 and is a member of the American Academy of Orthopaedic Surgeons since 1996. Dr. Baum has a special interest in all orthpaedic sports injuries including shoulders, knees and ankles.

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Ghassan S. Tooma, M.D. joined Corona Orthopaedic Associates in April of 1994. He received his medical degree at Loma Linda University and completed his post graduate work at Loma Linda University Medical Center. Dr. Tooma completed a Fellowship in total joint replacement at the University of Iowa and a Fellowship in hand surgery at Loma Linda University Medical Center. Dr. Tooma is eligible for certification with the American Board of Orthopaedic Surgeons. Dr. Tooma has a special interest in total joint replacement, hand and arthoscopic surgery.

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Jeffrey A. Martin, M.D. joined Corona Orthopaedic Associates in October of 2008. He received his medical degree at the University of Illinois-Chicago, and completed his post graduate training at Maricopa Medical Center. Dr. Martin also completed a Specialty Spine Fellowship at the Surgical Specialty Hospital of Arizona. He was board certified in 2003 and has a special interest in spine problems from the neck to the lower back.

Click here to read more about Dr. Martin in the Winter 2009 edition of the Corona Regional Medical Center Health News magazine.

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Andrew Hsiao, M.D. joined Corona Orthopaedic Associates in September of 2009. Originally from the Inland Empire, he has returned to the area after completing his undergraduate degree in biomechanical engineering at Stanford University, a medical degree at UC San Diego, and orthopaedic residency at Mount Sinai Hospital in New York. He specializes in sports medicine and completed his fellowship at the Andrews Sports Medicine Institute in Alabama where he trained under the world renowned Dr. James Andrews and Dr. William Clancy. During his fellowship, he served as the football team physician at Ashville High School, and the assistant team physician at Jacksonville State University. In addition, he participated in the surgical care of numerous professional and college athletes in baseball, football, mixed martial arts, basketball, gymnastics, and volleyball.

Dr. Hsiao specializes in sports medicine, arthroscopy and reconstruction of the knee, shoulder, hip and elbow. He has a unique interest in the treatment of cartilage loss. He has published articles in medical journals and has given presentations at orthopaedic conferences. During his free time Dr. Hsiao enjoys spending time with his family and staying in shape.

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Demetrio Quismorio, Jr., PA-C joined the group in October of 1998 having finished his studies at Wake Forest University School of Medicine in North Carolina. Demey completed his orthopaedic training at Riverside County Regional Medical Center. After graduating with his bachelor's degree from UCLA, he continued his relationship with UCLA, and was involved with various research studies involving coronary artery disease, HIV, and gastric ulcers.

• Curriculum Vitae