Eric S. Korsh, M.D, F.A.A.O.S.

Board Certified Orthopaedic Surgeon
Fellowship Trained Spinal Surgeon
Dr. Eric Korsh has practiced in the San Diego area 1997. He received his medical degree from Rutgers- NJ Medical School. After completing his orthopaedic surgery residency at Seton Hall University he completed a spinal surgery fellowship at The Hospital for Special Surgery in New York City which is considered the premier orthopaedic hospital in the world.

While Dr. Korsh treats the entire range of orthopaedic injuries, he is considered to be an expert in spinal surgery. He has treated many professional and elite amateur athletes, as well as countless weekend warriors. Dr. Korsh treats injuries to the entire spine including the cervical, thoracic and lumbar regions. His surgical expertise includes Minimally Invasive Spinal (MIS) Procedures, disc replacement surgery, and anterior and posterior fusions.

Dr. Korsh considers surgery to be a last resort and he extensively utilizes non-operative modalities and a multidisciplinary approach to the treatment of all orthopaedic injuries.


Matthew J. Gargulinski, D.O.
Board Certified Orthopaedic Surgeon

Matthew J. Gargulinski, MD, practices Orthopaedic Surgery in California since 2007 as a board certified Orthopaedic Surgeon, holding a Fellowship subspecialty training in Sports Medicine. Specialized in arthroscopic surgeries of the knee and shoulder, his focus lies on total knee and hip replacement surgeries. 

Dr. Gargulinski is a graduate of Harvard University. He trained in Orthopaedic Surgery at the Michigan State University/Mt. Clemens Regional Center and specialized in Sports Medicine in San Diego. 

Raised in Troy, Michigan, Dr. Gargulinski graduated with Honors from Harvard in 1996. In college, he sustained a major injury while playing football. This incident inspired him in choosing Orthopaedics as specialty. After completing his Michigan Orthopedic Surgery residency in 2007, Dr. Gargulinski focused on Sports Medicine. He performed his San Diego Fellowship training mentored by Dr. David Chao. 


Gargulinski served as team physician for various sports, including football and rugby. He is experienced in treating cases in professional levels as well as in collegiate or high school ones. An active member of the American Osteopathic Academy of Orthopaedics, Dr. Gargulinski is dedicated to helping his patients face the effects of injury or arthritis. Benefiting from his knowledge and expertise, patients are able to maintain a healthy, active lifestyle. Inspired by how his own surgeon rebuilt his injured knee, Dr. Gargulinski went on to do the same for other injured athletes. Sustained by his complex perspective as both surgeon and patient, Dr. Gargulinski makes certain his patients receive compassionate and effective care that maintains and improves their quality of life.


William W. Winternitz, Jr. M.D.
Board Certified Orthopaedic Surgeon
Board Certified in Sports Medicine

Dr. Winternitz graduated from the University of Kentucky Medical School with a major in Biology and Chemistry. He completed a residency in Orthopedic Surgery at the University of Minnesota and a fellowship in Sports Medicine at the University of Oregon. 

After his training, Dr. Winternitz practiced in Davis for 18 yrs. While at University of California Davis, he was Team Physician for the University as well as Davis High School and the Rivercats Professional Baseball Team. He also taught Orthopedic Surgery at the University and was chosen as the teacher of the year for the Family Medicine program at UC Davis in 1998 and received the same award from Sutter Health in 2003. He has written articles about Orthopedic Surgery and Sports Medicine which have been published in national and international peer reviewed journals. 

Dr. Winternitz is the team physician at Mt. Carmel High and San Pasqual High Schools. He is also the head team physician of Palomar College. He is the orthopedic consultant for the Surf Soccer League of San Diego and Cheerforce San Diego. 

Dr. Winternitz teaches in the UC San Diego Sports Medicine Fellowship Program. He is Board Certified by the American Board of Orthopedic Surgery and has a subspecialty Board Certification in Sports Medicine.


Robert Afra, M.D.
Board Certified Orthopaedic Surgeon

Dr. Robert Afra is a San Diego-based orthopedic surgeon who is nationally renowned in sports medicine with expertise in treating shoulder, elbow, wrist, hip, knee and ankle conditions. As the former Chief of Sports Medicine at the University of California, San Diego, Dr. Afra has published extensively in professional journals and books and presented at conferences around the world, where he is considered a pioneer in the study of shoulder, knee, elbow and ankle injuries in athletes and active adults. Dr. Afra is also a specialist in cartilage issues and pain in knee cap disorders; he was named Co-Director of the International Patellofemoral Study Group Conference in San Diego in July 2011. As a sports medicine physician, he has managed and treated complex joint injuries and successfully guided patients back to peak performance levels.

Dr. Afra takes a customized approach to treat each of his patients. He provides comprehensive care to injured athletes, from sprain rehabilitation and muscle and ligament tear repairs to care for broken bones. He regularly cares for children and active adults with injuries to the upper extremities (shoulders, elbows, and wrists) and lower extremities (hips, knees, and ankles). His joint replacement practice consists of shoulder replacement, hip replacement, and knee replacement surgery, including minimally invasive surgery techniques and traditional joint replacement surgery when necessary.

Dr. Afra completed his fellowship training in sports medicine at Boston University, where he treated a variety of elite college athletes in ice hockey, soccer, basketball, field hockey and lacrosse. Dr. Afra was a researcher at University of Hawaii’s Queen Emme Medical Center in the field of muscle and nerve physiology, and was a surgical fellow at the world-renowned Barnard O’Brien Microsurgical Institute in Melbourne, Australia. He has studied microsurgical techniques and the art of plastic surgery. Dr. Afra studied medicine at UCLA, where he also completed his surgery internship. Prior to attending medical school, Dr. Afra worked at the Salk Institute on an NIH research stipend. In 2010, Dr. Robert Afra was selected by the Arthroscopy Association of North America, a premiere sports medicine society, as one of three surgeons to lecture to university faculty in the United States and Canada.

Harish Hosalkar, M.D., FACS, FAAOS
Board Certified Orthopaedic Surgeon (Adult & Pediatric)

Dr. Harish Hosalkar is a Board Certified orthopaedic surgeon in both the United States and India, and is licensed to practice medicine in the states of California, Nevada, Pennsylvania, Washington State, Florida, and in United Kingdom and India. He brings expertise in hip joint preservation and arthritis prevention surgery that has previously been unavailable in this entire region. He is an accomplished Orthopedic Surgeon who is also trained in traumatology and complex fracture care, hip and pelvis reconstruction, limb-lengthening and deformity correction, children’s orthopedic problems, tumor surgery, and neuro-muscular orthopedic surgery including management of traumatic brain injury, stroke and spasticity.

Dr. Hosalkar is currently the director of Center for Hip Preservation and Children’s Orthopedics, Inc in San Diego and also the founder and director of the Hosalkar Institute for Joint Preservation and Injury care. He is one of the founding members of the Center for Hip Preservation at Tri-City Medical Center and the Deformity Correction and Amputation Prevention Center. He is also part of the Neuro-restoration team at Scripps Encinitas hospital and is on faculty at AO North America for Trauma. Dr. Hosalkar is affiliated with the Scripps Mercy Hospital in San Diego & Chula Vista, Scripps Encinitas, Sharp Grossmont Hospital, Tri-City Medical Center, and Paradise Valley Hospital. He is also affiliated with several surgery centers in central and north San Diego.

Dr. Hosalkar has published extensively during his career and has an extensive list of peer reviewed publications, chapters, podium presentations, posters, instructional course lectures, specialty day meetings, and visiting professorships to his credit.

With almost 24 years of experience he has encountered numerous different clinical problems and has helped to impart that knowledge and experience by frequently lecturing and teaching medical students, residents, and practicing physicians in both the art and science of orthopedics and musculoskeletal health and rehabilitation. He has participated in administrative and leadership positions in health care at both the regional, national and international level.

David A. Petersen, M.D., FAAOS
Board Certified Orthopaedic Surgeon


Dr. David Petersen is a board-certified orthopedic surgeon. He joined the San Diego Spine & Joint Center in 2014 and, along with his team of nurses and healthcare providers, manages and oversees his patients’ care from the pre-operative to post-operative process.

Dr. Petersen went to medical school at the Medical College of Virginia, completing his residency there in 1994. While in the Navy, he worked at the Pensacola Naval Hospital and Naval Reserves Medical School, as well as general medical officer and assistant emergency department director at Orlando Naval Hospital with the rank of Lieutenant.

His research includes radio biochemistry, articular cartilage regeneration study, cadaveric pedicle screw study, and extensive spine biomechanics research performed at USF as part of a PhD mentor program. He conducts product evaluation for numerous spine companies and has approximately 20 patents in spine surgery.

Dr. Petersen’s goal is that each of his patients receives the highest quality medical care with a seamless experience in the continuum of care at Paradise Valley Hospital.

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