Our expert radiology team has years of experience within the practice and service to regional clients. This results in positive, trusted, professional relationships between our staff and referring physicians. Our clients know what to expect from AR because we’ve built our reputation with them over many years.
To maintain their expertise, each member of our team receives continuing education and hands-on training to learn new techniques and incorporate advanced technologies into the practice, as well as to reinforce our expertise in basic diagnostic procedures.
The AR staff includes experienced board-certified physicians, highly trained radiographers and sonographers, a supportive administrative group, and a visionary management team. Our screening process combines educational, experiential, and personality attributes, which are reflected in AR’s strong teamwork and commitment.
Our Physicians

Paul C. Marrinelli, MD
President, Associated Radiologists, P.A.
BOARD CERTIFIED
American Board of Radiology
MEDICAL SCHOOL
University of Maryland, Baltimore, MD
RESIDENCY
University of Maryland, Baltimore, MD

Dr. Taik-Kun Kim
Board Certified
American Board of Radiology
Medical School
Korea University College of Medicine
Residency
Korea University College of Medicine
Fellowship
Diagnostic and Interventional Neuroradiology, University of Rochester.

Dr. Joshua Similuk
Board Certified
American Osteopathic Board of Radiology
Medical School
Lake Erie College of Osteopathic Medicine
Residency
Michigan State University
Fellowship
Abdominal Imaging, Wake Forrest Baptist Medical Center

Robert E. Mazzei, DO
BOARD CERTIFIED
American Board of Radiology
MEDICAL SCHOOL
University of Osteopathic Medicine, Des Moines, IA
RESIDENCY
Hahnemann University Hospital, Philadelphia, PA
FELLOWSHIP
Neuroradiology, Allegheny University Hospital, Philadelphia, PA

Kerri L. Hesley, MD
BOARD CERTIFIED
American Board of Radiology
MEDICAL SCHOOL
University of Texas, Galveston, TX
RESIDENCY
Parkland Memorial Hospital, University of Texas, Dallas TX
Medical College of Virginia, Richmond, VA
FELLOWSHIP
Magentic Resonance Imaging, Baylor University, Dallas, TX

Trung Q. Vu, MD
BOARD CERTIFIED
American Board of Radiology
MEDICAL SCHOOL
Tulane University School of Medicine, New Orleans, LA
RESIDENCY
Diagnostic Radiology, Medical Center of Delaware

Narasim S. Murthy, MD
BOARD CERTIFIED
American Board of Radiology
MEDICAL SCHOOL
Hahnemann School of Medicine, Philadelphia, PA
RESIDENCY
Diagnostic Radiology, Western Pennsylvania Hospital, Pittsburgh, PA
FELLOWSHIP
Abdominal Imaging, University of Pittsburgh, Pittsburgh, PA

Mansoor A. Husain, MD
BOARD CERTIFIED
American Board of Radiology
MEDICAL SCHOOL
University of Maryland-School of Medicine, Baltimore, MD
RESIDENCY
University of Maryland Medical Center, Baltimore, MD
FELLOWSHIP
Johns Hopkins Hospital, Baltimore, MD

Kevin F. McCarthy, MD
BOARD CERTIFIED
American Board of Radiology
MEDICAL SCHOOL
Uniformed Services University of the Health Sciences, Bethesda, MD
RESIDENCY
National Capitol Consortium
National Naval Medical Center, Bethesda, MD

John M. Filigenzi, MD
BOARD CERTIFIED
American Board of Radiology
MEDICAL SCHOOL
University of Maryland Baltimore, MD
RESIDENCY
University of Maryland Medical Center Baltimore, MD
FELLOWSHIP
Massachusetts General Hospital Boston, MA

Oliver Chen, MD
Board Certified
Eligible – American Board of Radiology
Medical School
Temple University School of Medicine
Residency
Temple University Hospital, Philadelphia, PA
Fellowship
Abdominal Imaging, University of Wisconsin Hospital, Madison WI
Management

Linda L. Walla MBA, R.T. (R) (M)
ADMINISTRATIVE DIRECTOR
Department of Radiology Washington County Health Association

Donald J. Cross, B.A.
ADMINISTRATIVE DIRECTOR
Robinwood diagnostic Imaging Services