Amanda Hirz, D.N.P., A.P.R.N., F.N.P.-C.

Amanda is a certified family nurse practitioner at Casper Orthopedics, focusing on comprehensive musculoskeletal care.

Amanda earned both her Bachelor of Science in Nursing degree and her Doctor of Nursing Practice (DNP) degree from the University of Wyoming. Before becoming an advanced practice provider, Amanda spent many years as an emergency department registered nurse. Her extensive background in emergency medicine and acute trauma care gave her experience in managing complex injuries, sparking her specific clinical interest in orthopedics and long-term functional recovery.

Breck Groskreutz, P.A.-C.

As a board-certified physician assistant at Casper Orthopedics, Breck works collaboratively with our orthopedic specialists to deliver exceptional musculoskeletal care to the Casper community. He specializes in the evaluation, diagnosis, and management of a wide range of orthopedic conditions, including acute trauma, sports injuries, and degenerative joint disease.

Trevor R. Mordhorst, M.D.

Born and raised in Wyoming, Dr. Trevor Mordhorst is a board-certified, fellowship-trained physiatrist specializing in interventional spine and musculoskeletal medicine. He provides nonsurgical care for patients experiencing spine and musculoskeletal pain, nerve-related symptoms, joint discomfort, and limitations in movement or function. Dr. Mordhorst combines advanced diagnostic expertise with minimally invasive procedures to develop treatment plans based on each patient’s individual goals, needs, and lifestyle.

Cyber Incident

Casper Orthopedic Associates, PC, Notifies Individuals of Data Security Incident

Casper Orthopedic Associates, PC (“Casper”), is notifying individuals whose information may have been involved in a cybersecurity incident. 

On or about May 23, 2026, Casper discovered it was the victim of a cyberattack by an unauthorized third party. Immediately upon identifying the incident, Casper engaged third-party cybersecurity experts to assess, contain, and remediate the incident. Law enforcement was also notified. 

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