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Who We Are

Orthopaedic Surgery Leadership

The Department of Orthopaedic Surgery is home to an experienced and knowledgeable roster of physicians specializing in the discipline of orthopaedic surgery. All have received praise, both public and from their peers, for the work they perform within their subspecialty fields of expertise.

Antonia Chen, M.D., M.B.A. headshot

Antonia Chen, M.D., M.B.A.

Professor and Chair
Dr. Charles F. Gregory Distinguished Chair in Orthopaedic Surgery

Alexandra Callan, M.D.

Alexandra Callan, M.D.

Associate Professor and Section Chief
Residency Program Director

Jaysson T. Brooks, M.D..

Jaysson T. Brooks, M.D.

Associate Professor, Pediatric Orthopaedic Surgeon
Associate Residency Program Director

Garen Collett, M.D.

Garen Collett, M.D.

Assistant Professor General Orthopaedics - Total Joint Replacement
Associate Residency Program Director

John A. (Tony) Herring, M.D.

John A. Herring, M.D.

Professor and Chief of Staff Emeritus
Scottish Rite for Children

Christine Ho, M.D.

Christine Ho, M.D.

Professor and Director
Children’s Health

Varatharaj Mounasamy, M.D.

Varatharaj Mounasamy, M.D.

Professor and Chief of Orthopaedic Surgery
Dallas VA Medical Center

Karl Rathjen, M.D..

Karl Rathjen, M.D.

Professor and Assistant Chief of Staff
Foundation President at Scottish Rite for Children

Adam J. Starr, M.D.

Adam J. Starr, M.D.

Hansjörg Wyss Distinguished Professor
Professor and Director, Orthopaedic Surgery Trauma Fellowship, UT Southwestern Medical Center
Chief, Orthopaedic Surgery at Parkland Hospital

Dan Sucato, M.D.

Dan Sucato, M.D.

Professor and Chief of Staff
Scottish Rite for Children