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Our Doctors & Staff

OSI's physicians are board certified and internationally renowned for their work in Orthopaedics. In the sections below each physician is categorized by their sub-specialty area.

General Orthopaedics

Lawrence S. Barnett, M.D.
Dr. Lawrence Barnett is a board certified orthopaedic surgeon whose practice focuses on general orthopaedics.

David C. Smith, M.D.
Dr. Smith is a board certified orthopaedic surgeon. He is a general orthopaedist, but focuses largely on arthroscopic procedures of the knee and shoulder, as well as joint replacement surgery.

Sports Medicine

Scott P. Fischer, M.D.
Dr. Fischer is a board certified orthopaedic surgeon with subspecialty fellowship training in sports medicine and arthroscopic surgery.

Miguel P. Prietto, M.D
Dr. Miguel Prietto is a board certified orthopaedic surgeon. He is a general partner of the Orthopaedic Specialty Institute in Orange County where his practice is focused on sports medicine, arthroscopic and reconstructive knee and shoulder surgery, and knee replacements.

Carlos A. Prietto, M.D.
Dr. Carlos Prietto is a board certified orthopaedic surgeon with subspecialty training in sports medicine.

Benjamin D. Rubin, M.D.
Dr. Rubin is board certified in Orthopaedic Surgery with subspecialty training in Sports Medicine and Arthroscopy.

Michael Shepard, M.D.
Dr. Shepard is a board certified Orthopaedic Surgeon with subspecialty in Sports Medicine and Arthroscopic Surgery. His special emphasis is on the care of the overhead athlete.

Spine (Neck and Back)

Michael I. Danto, M.D.
Dr. Danto is a board certified specialist in Physical Medicine and Rehabilitation. He specializes in non-surgical treatment of orthopaedic conditions.

Gregory D. Carlson, M.D.
Dr. Carlson is a board certified orthopaedic surgeon with subspecialty training in Spine Surgery.

Jeffrey E. Deckey, M.D
Dr. Deckey is a board certified orthopaedic surgeon. His practice focuses on complex disorders of the spine in adult and pediatric patients.

Jack Chen, M.D
Dr Jack Chen is a subspecialty trained orthopaedic spine surgeon. His clinical practice is devoted to treating both adult and pediatric patients with spinal disorders.

Hand and Wrist

Mark N. Halikis, M.D.
Dr. Halikis is a board certified orthopaedic surgeon specializing in hand and upper extremity surgery.

Foot and Ankle

Jiun-Rong Peng, M.D.
Dr. Peng is a board certified orthopaedic surgeon with subspecialty training in foot and ankle surgery and arthritis reconstructive surgery.

Total Joint

Steven L. Barnett, M.D.
Dr. Steven Barnett is a board certified orthopaedic surgeon with a practice specializing in Joint Replacement and Adult Reconstructive Surgery for arthritic conditions.

Robert S. Gorab, M.D.
Dr. Gorab is a board certified orthopaedic surgeon and one of the managing partners of Orthopaedic Specialty Institute. Dr. Gorab's practice focuses on joint replacement and arthritis surgery.

Ancillary Personnel

Susanne L. Porter, RN, MSN, FNP
Susanne Porter is a Family Nurse Practitioner for Dr. Gorab at Orthopaedic Specialty Institute.

Joseph C. Rial, PA-C
Joseph Rial is a Physician Assistant in orthopaedic spine surgery working with Dr. Jeffrey Deckey at the Orthopaedic Specialty Institute.

Rodolpho "Rudy" Solórzano, PA-C
Rudy Solorzano PA-C is a physician assistant in Knee and Shoulder Surgery and Sports Medicine for Dr. Carlos Prietto at Orthopaedic Specialty Institute.

Stacy Summa, MMSc, PA-C
Stacy Summa is a Physician Assistant for Dr. Benjamin Rubin at Orthopaedic Specialty Institute.

Christopher M.Smith, Smith, PA-C
Christopher Smith is a Physician Assistant for Dr. Steven Barnett at Orthopaedic Specialty Institute. Chris works in close association with Dr. Barnett in the diagnosis and treatment of hip and knee disorders.
General Orthopaedics
Lawrence S. Barnett, M.D.
David C. Smith, M.D.
Sports Medicine
Scott P. Fischer, M.D.
Miguel P. Prietto, M.D.
Carlos A. Prietto, M.D.
Benjamin D. Rubin, M.D.
Michael Shepard, M.D.
Spine (Neck and Back)
Michael I. Danto, M.D.
Gregory D. Carlson, M.D.
Jeffrey E. Deckey, M.D.
Jack Chen, M.D.
Hand and Wrist
Mark N. Halikis, M.D.
Foot and Ankle
Jiun-Rong Peng, M.D.
Total Joint
Steven L. Barnett, M.D.
Robert S. Gorab, M.D.
Ancillary Personnel
Susanne L. Porter, RN, MSN, FNP
Joseph C. Rial, PA-C
Rodolpho "Rudy" Solórzano, PA-C
Stacy Summa, MMSc, PA-C
Christopher M. Smith, PA-C
Contact Us
Orthopaedic Specialty Institute
280 South Main Street
Suite 200
Orange, CA 92868
Tel (714) 634-4567
Fax (714) 634-4569