Our Providers

Desert Orthopedic Center Orthopedic Surgeons Rancho Mirage California

From the appointment scheduler who helps you find the right physician, to the receptionist who greets you at the front desk, the staff of Desert Orthopedic Center takes pride in making your visit as comfortable as possible. Our chief executive officer and administrator oversee a staff of nearly 150 employees dedicated to quality patient care.

In order to effectively deliver the high standard of medical care for which it is known, Desert Orthopedic Center maintains a staff of qualified specialists and places a great emphasis on education. From continuing medical education to recent changes in insurance and Workers Compensation regulations, our staff keeps abreast of the latest technology to provide you with the most competent and comprehensive care available.

A team approach starts at the top with physician specialists covering all areas of orthopedics. All physicians are board certified and have met rigorous training and technical requirements to become part of DOC. Many are fellowship trained and bring credentials from around the world.

  • Stephen Connell

    Stephen J. O'Connell, M.D.

    Chairman, Eisenhower Desert Orthopedic Surgery
    Director, Hand and Wrist Surgery

    Stephen J. O’Connell, M.D. a fellowship-trained, board-certified orthopedic surgeon specializing in surgery of the hand, wrist and shoulder. He joined Desert Orthopedic Center in 1988 to establish and direct the Center’s hand and upper extremity program.

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  • David A. Friscia, M.D.

    David A. Friscia, M.D.

    Director of Foot & Ankle Surgery

    David A. Friscia, M.D. joined Desert Orthopedic Center in 1990 to serve as director of the Center’s foot and ankle program. A Southern California native, Dr. Friscia was raised in Long Beach.

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  • James A. Bell, M.D., Ph.D.

    James A. Bell, M.D., Ph.D.

    General Orthopedics

    James A. Bell, M.D., Ph.D. is a board-certified orthopedic surgeon specializing in orthopedic trauma, sports medicine and joint replacement. He is also certified in Sports Medicine. He joined Desert Orthopedic Center in 1996.

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  • A. David Tahernia, M.D.

    A. David Tahernia, M.D.

    Director of the Comprehensive Spine Center

    A. David Tahernia, M.D. is a board-certified, fellowship trained orthopedic spinal surgeon. He joined Desert Orthopedic Center in 2003 where he is the Director of the Comprehensive Spine Center.

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  • John G. DeSantis, D.O.

    John G. DeSantis, D.O.

    Hip & Knee Reconstruction

    John G. DeSantis, D. O., is a board certified fellowship-trained orthopedic surgeon specializing in total hip and total knee reconstruction. A native of Michigan, Dr. DeSantis moved to Southern California to join Desert Orthopedic Center in 2008.

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  • Patrick St. Pierre, M.D.

    Patrick St. Pierre, M.D.

    Director, Shoulder and Elbow Surgery

    Committed to the care of athletes of all ages, Dr. Patrick St. Pierre is the team physician for College of the Desert, Palm Desert High School and Palm Springs Power Baseball.

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  • Matthew Diltz , M.D.

    Matthew Diltz, M.D.

    Director, Sports Medicine

    Matthew V. Diltz, M.D. is a board certified and fellowship-trained orthopedic surgeon specializing in Sports Medicine. He is a native of Southern California.

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  • Phillip Jeffrey Smith, D.O.

    Phillip Jeffrey Smith, D.O.

    Physical Medicine and Rehabilitation

    P. Jeffrey Smith, D.O. is a fellowship-trained pain management and interventional spine specialist and is Board Certified in Physical Medicine and Rehabilitation.

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  • Reginald Fayssoux, M.D.

    Reginald Fayssoux, M.D.

    Spinal Surgeon

    Reginald Fayssoux, MD is a fellowship-trained orthopedic spinal surgeon who specializes in the operative and nonoperative care of patients with problems related to their spine.

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  • Hazmer Cassim DO DABPM

    Hazmer Cassim, DO DABPM

    Chair of Pain Management Eisenhower Medical Center
    Director of Pain Management Desert Orthopedic Center

    Dr. Cassim is a board-certified physiatrist (PM & R) with additional certification in pain management from the American Board of Pain Medicine (ABPM).

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  • Erik Schnaser, M.D.

    Erik Schnaser, M.D.

    Hip & Knee Reconstruction

    Erik Allen Schnaser, M.D. is a fellowship trained and Board Certified hip and knee replacement surgeon.  He specializes in adult hip and knee disorders including pre-arthritic and arthritic conditions. 

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  • Ghassan Boghosian, D.O.

    Ghassan Boghosian, D.O.

    Hip & Knee Reconstruction

    Dr. Boghosian is a fellowship-trained and board certified orthopedic surgeon, specializing in adult primary and revision joint replacement of the hip and knee.

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  • Julie Johnson, M.D.

    Julie Johnson, M.D.

    Orthopedic Foot & Ankle

    Julie Johnson, M.D. joined Desert Orthopedic Center in 2016 as an orthopedic foot and ankle specialist. Dr. Johnson formerly practiced in Fargo, North Dakota, but as a native Nevadan, she is happy to return to the West Coast after 10 years living across the country.

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  • David D. Savin, M.D.

    David D. Savin, M.D.

    Orthopedic Shoulder and Elbow

    David Daniel Savin, M. D. is a fellowship-trained orthopaedic surgeon. He specializes in the diagnosis and treatment of shoulder and elbow disorders, as well as general orthopaedics and fracture care.

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  • Jacob R. Bosley, M.D.

    Jacob R. Bosley, M.D.

    Orthopedic Surgeon

    Jacob R. Bosley, M.D. is a fellowship-trained orthopedic surgeon. His training has included a focus on surgery of the hand, wrist and upper extremity.

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  • Kevin Wong, DO

    Kevin Wong, DO

    Pain Management/Anesthesiology

    Dr. Kevin Wong, D.O. is a board-certified Anesthesiologist with fellowship training in Pain Medicine. He received his Bachelor of Science in Biochemistry and Management Science at the University of California, San Diego

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  • Michael W. Seiberg, D.P.M.

    Michael W. Seiberg, D.P.M.


    Michael W. Seiberg, D.P.M. is a board-certified podiatrist specializing in conservative and surgical treatment of foot and ankle disorders, including diabetic foot care and wound care.

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Nurse Practitioner

  • Janet Conley, NP

    Janet Conley, NP

    Certified Nurse Practitioner

    Janet Conley, CNP is a native of Greenup County, Kentucky. Janet graduated from Shawnee State University in Ohio with a BSN in Nursing and Walden University with a Master of Science in Nursing along with a degree as a Family Nurse Practitioner.

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Physician Assistants

Physician assistants (PAs) is a healthcare professional who is trained and licensed to practice medicine under the supervision of physicians and surgeons. PAs are formally trained to provide diagnostic, therapeutic, and preventive healthcare services, as delegated by a physician.

  • Inayat Moosa, MPAS

    Inayat Moosa, MPAS


    Inayat Moosa, MPAS, PA-C, joined Desert Orthopedic Center in 2015. He works with Dr. Reginald Fayssoux in all aspects of patient care, including seeing patients in the office and assisting in surgery.

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  • Kevin Hearn, MPAS

    Kevin Hearn, MPAS


    Kevin is a Southern California native with an undergraduate degree from Westmont College in Santa Barbara and his Physician Assistant degree from Massachusetts College of Pharmacy and Health Science.

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  • Andrew Charles Allen M.M.Sc., PA-C

    Andrew Charles Allen PA-C, M.MSc.

    Director of P.A.

    Andrew Allen, M.M.Sc., PA-C joined Desert Orthopedic Center in 2004 after receiving a Master of Medical Science from the Yale University School of Medicine in 2003.

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  • Matthew Bartie, PA-C

    Matthew Bartie, PA-C

    Physician Assistant

    Matthew Bartie has a double Bachelor’s in Psychology and Philosophy from California State University, San Bernardino and received his Master of Science in Physician Assistant Studies at Western University of Health Sciences in Pomona.

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  • Say Thao, PA-C

    Say Thao, PA-C

    Physician Assistant

    Say Thao, PA-C is a University of Wisconsin-Madison graduate, where he completed his undergraduate degree and Physician Assistant training.

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  • David Delgadillo, PA-C

    David Delgadillo, PA-C

    Physician Assistant

    David Delgadillo, PA-C, a graduate of USC School of Medicine, joined Desert Orthopedic Center in 1995 following his academic achievements and several years of experience.

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  • Marianne Dezelan, PA-C

    Marianne Dezelan, PA-C

    Physician Assistant

    A native of Southern California, Marianne Dezelan, PA-C earned a Bachelors of Arts degree in Psychology from the University of California, Riverside. She is also a graduate of Western University Health Sciences Physician Assistant program in Pomona.

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  • Kirt L. Edly D.C, PA-C

    Kirt L. Edly D.C, PA-C

    Physician Assistant

    Kirt L. Edly, D.C., PA-C has more than 20 years as a health practitioner. He began his education with a Bachelor of Science degree in biology from Central Michigan University, Mt. Pleasant, Michigan.

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  • William (Bill) H. Hinds, MMS, PA

    William (Bill) H. Hinds, MMS, PA

    Physician Assistant

    William (Bill) H. Hinds, MMS, PA has been an active health practitioner for the past 20 years. His early medical experience began when he obtained a certificate in Sports Medicine from San Bernardino Valley College in San Bernardino.

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  • Michael Guiles, PA-C

    Michael Guiles, PA-C

    Physician Assistant

    Michael Guiles is a native of Montana, studied at the University of Montana, Montana State University of Billings and received his BS Physician Assistant degree at Rocky Mountain College School of Allied Health.

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  • Ben Haddock

    Ben Haddock, PA-C

    Physician Assistant

    Benjamin Haddock, PA-C, is a local to North Carolina, where he grew up on the coast in Wilmington, NC. Ben graduated with his Master of Science in Physician Assistant Studies(MSPAS) in 2020 from Lenoir-Rhyne University. Prior to PA school, Ben received his Bachelor of Science in Athletic Training from the University of North Carolina at Charlotte.

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  • Brendan C. Murphy, PA-C

    Brendan C. Murphy, PA-C

    Physician Assistant

    Brendan C. Murphy, MPA, PA-C is a graduate of Loma Linda University’s Masters Program in Physician Assistant studies receiving honors.

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  • Jim Rosell, PA

    Jim Rosell, PA-C

    Physician Assistant

    Jim S. Rosell, PA-C, is a native to Southern California where he studied and graduated in Biochemistry from Cal State Fullerton.

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  • Janice Mayer

    Janice Mayer, PA-C

    Physician Assistant

    Janice Mayer, PA-C, joined Desert Orthopedic Center following matriculation from South University in Savannah, GA where she graduated with high honors and received her Masters of Science in Physician Assistant Studies (MSPAS).

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  • Hannah Glenn

    Hannah Glenn, PA-C

    Physician Assistant

    I approach each patient visit with my full focus and effort. My hope is that each patient feels like I am their advocate for care.

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