Our Physician Assistants

Our Physician Assistants are all board-certified by the National Commission on Certification of Physician Assistants, which ensures that they have completed rigorous education and training standards. With more than 30 highly skilled and experienced radiologists and 10 Physician Assistants on staff, MRA offers patients and referring physicians in our region the best in medical imaging.

Michael R. Bonisa, PA-C

On staff since 1999
Medical School: Wake Forest University School of Medicine Physician Assistant Program

Shannon R. Ervin, PA-C

On staff since 2002
Medical School: Wake Forest University School of Medicine Physician Assistant Program

Kevin W. Greene, MHS, PA-C

On staff since 2006
Medical School: Duke University School of Medicine Physician Assistant Program

Amy Harrelson, PA-C

On staff since 2003
Medical School: Duke University Physician Assistant Program

Audrey J. Hockeborn, PA-C

On staff since 2007
Medical School: Wake Forest University School of Medicine Physician Assistant Program

Ashley C. Medina, MMS, PA-C

On staff since 2013
Medical School: Wake Forest University Physician Assistant Program

Nicholas A. Oravetz, PA-C

On staff since 2004
Chief PA
Medical School: Marietta College Master of Science, Physician Assistant Studies

E. Marie Ostroff, MMS, PA-C

On staff since 2012
Medical School: Nova Southeastern University

Jose A. Ruiz, PA-C

On staff since 2008
Medical School: Duke University School of Medicine Physician Assistant Program

Joshua Russ, PA-C

On staff since 2013
Medical School: Wingate University

Scott A. Young, PA-C

On staff since 2007
Medical School: Medical University of South Carolina, BS
University of Nebraska Medical Center, MS