Executive Leadership Team

TRA Medical Imaging’s executive leadership team has years of experience in all aspects of practice management and medical facilities operations. The executive team believes that people are the key to continued success. To lead by example, they encourage constructive innovation from the staff and set high standards for themselves and the rest of the TRA Medical Imaging team. Competent, supportive leadership is a leading factor to our success, and one of the reasons TRA has enjoyed a reputation of excellence for over 70 years.

If you would like to reach a member of our Executive team, please call (253) 761-4200, option 1.

Dr. Seiler v2
Douglas P. Seiler, MD
President, Radiologist



Dr. Zima Hartz MD, Douglas
Aaron Zima, MD
Vice President, Radiologist
Douglas J. Hartz, MD
Secretary, Radiologist


Dr. Park Dr. Bjarke
Lawrence S. Park, MD
Treasurer, Radiologist
Erik N. Bjarke, MD
Treasurer, Radiologist


Chris Coates v1

Dave Hulse_2018_CU3
Chris Coates
Interim Chief Executive Officer,
Chief Financial Officer
Dave Hulse
Director of Outpatient Imaging


Sean Patten
Sean Patten
Director of Information Technology