Contact Us

Board Members

Board Chair

Executive Secretary

Marilyn Walker, R.T.(R)

Home Phone:  303-733-8021




Web Master

Tim Masters, B.S., R.T.(R), CIIP

Work Phone:  303-218-8072

Home Phone: 877-850-2256

Fax: 720-920-0285



Tim graduated from the US Army Academy of Health Sciences Radiology Program in 1990, and has a Bachelor of Science in Information Technology from Colorado Technical University. He worked at Swedish Medical Center from 1992 to 2002 as a CT Technologist/Supervisor and was the PACS/RIS Administrator for Sky Ridge Medical Center from 2003 to 2006. He held the position of Division Imaging Manager for the Continental Division of HCA from 2006 to 2010.  Tim currently works for GE Healthcare as the Global Product Manager for Centricity PACS.



Open Position

Sean Mcmillon, RT (R)


Vice President


Ralph graduated from the Paramedical Occupational Center in Los Angeles, Ca. in 1974 . He has lived in Denver since 1976 . He currently works at Littleton Adventist Hospital and North Suburban Medical Center his favorite hobby is playing the bass guitar for his church choir.

Ralph Marant, R.T.(R)

Work Phone:  (720) 308-7860


Nancy Nelson, B.S., R.T. (R), (BD)



Nancy Pritchard, MHA, R.T .(R),(MR),(CT), CRA, MRSO

Work Phone:  720-848-1115

Nancy began her Radiology career as a student at Presbyterian St. Luke's School for Health Sciences Education.  She has been a Technologist in CT and MRI at Presbyterian St Luke's Medical center, CT/MRI Supervisor at The Medical Center of Aurora and currently Manager, Divisions of CT and MRI at the University of Colorado Hospital.  She has a MHA from Webster University, a BS from Regis University.  She is ready to join the Board of CSRT to bring her expertise to us.




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The Colorado Society of Radiologic Technologists