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Gregory Horner, M.D. (Orthopedic Surgeon Expert Witness)

(Orthopedic Surgeon Expert Background Info Summary)

Gregory Horner, M.D. is a Orthopedic Surgeon Expert Witness who holds a Board Certification in General Orthopaedics as well a Hand Subspecialty certification.  He often performs instructional presentations nationally on hand surgery and has also given presentations on shoulder trauma.  He states hand and elbow patients are common and compromise about 75% of his practice.

Dr. Horner majored in Biomedical Engineering at Northwestern University, Evanston, IL from 1985 to 1989 and went to Medical School at John Hopkins Medical School, Baltimore, MD from 1989 to 1993.


(Orthopedic Surgeon Expert Bullet Points of Interest)

  • Howard Hughes Research Scholar – National Institute, Bethesda, Maryland (1990)
  • Hand surgeon and Orthopaedic Surgeon – Tri-Valley Orthopaedic Specialists, Inc., Pleasanton, California (1999 to Present)
  • Board Member – Ambulatory Surgery Association of America (2013 to Present)
  • Board Member- California Ambulatory Surgery Association (2011 to 2014)
  • Vice Chief of Orthopaedics Valley Care Hospital, Pleasanton, California (2006 to 2008)


(Orthopedic Surgeon Expert Final Words/Short Summary)

Dr. Horner has given several national presentations. A few of these are: Surgery centers A-Z – Instructional Course Lecture, American Society for Surgery of the Hand, accepted: September 2015; Strategies for Transitioning from Out of Network to a Contracted ASC Model – 10th Becker’s ASC Annual Orthopedic Spine and Pain Management-Driven ASC Conference, Chicago, June 14-16, 2012; Surgery Centres A-Z – Half Day Pre-Course, American Society for Surgery of the Hand, September 2011; Improved Range of Motion Following Treatment of Unstable Distal Radius Fractures with External Fixation – New England Hand Society Meeting, Boston, MA, 1998 and Treatment Outcome of Impingement Syndrome of the Shoulder – Residents and Fellows Arthroscopy Conference, Phoenix, AZ, 1996.

Dr. Horner has also been published in his field. These include but not limited to: Surgery Centres A-Z – Business of Hand Surgery Newsletter, American Society for Surgery of the Hand, August 5, 2011 and Innervation of the Human knee joint and implications for surgery – Clinical Orthopaedics and Related Topics, 1994 Apr (301) 221-6.

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Published: November 2, 2022
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