Meet the Faculty

Debbie McCollam

Debbie McCollam, Professor, R.T.(R)(M), MIT Department Chair


Diagnostic Medical Sonography

Robyn Cole

Robyn Cole, Assistant Professor, Program Director of DMS

Bobbi Kowash

Bobbi Kowash, B.S. RDMS RVT, Instructor


Bobbi joined the faculty at Oregon Tech in January 2010 teaching Anatomy and Physiology labs for the Natural Sciences department. She continued to expand her duties on campus to become a part of the MIT department, teaching in the Vascular, Echocardiography and DMS programs while continuing her role in the Natural Sciences department. In the fall of 2013 she stepped into her current role as a full time instructor for the DMS program

She started her career as an Alumnus of Oregon Tech’s Vascular Imaging program, fulfilling her externship requirement in Albany, New York. After graduation she stayed on at Albany Medical Center for almost two years until the call of her home, Oregon, was strong enough to bring her husband and herself back to the west coast. Bobbi started employment with a Vascular Surgery service in Salem, Oregon and then decided to challenge herself more by cross training to general ultrasound while employed with Oregon Imaging Center in Eugene, Oregon. She continued to expand her knowledge of ultrasound to become a senior technologist. After many years at Oregon Imaging, Bobbi and her husband Roger decided to move to Klamath Falls when Roger was presented with an employment opportunity of VP of Engineering. Bobbi is ARDMS Registered in Abdomen, OB/GYN, Breast and Vascular Technology.

Bobbi enjoys keeping up with her three children at home as well as photography, reading, biking/running and boating.


Barry Canaday

Barry Canaday, Assistant Professor, Program Director of Echocardiography

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Barry obtained his Master of Science Degree in Biology from Western Washington State College (now Western Washington University) in 1973. He then held a number of jobs, as varied as houseparent at a facility for troubled teenage girls, to Seasonal Park Naturalist at Olympic National Park. In 1976 he entered an AAS Program in Nursing at Peninsula College, Port Angeles, WA, graduating in 1978, and obtained his RN license.

As a Registered Nurse, Barry worked primarily in intensive care environments at Sacred Heart General Hospital in Eugene, OR prior to entering the AAS Non-Invasive Cardiovascular Technology program at Spokane Community College in 1990, graduating in 1992. The 17 years prior to joining the Oregon Tech Faculty in September 2009, were spent employed at Bend Memorial Clinic, Bend, Oregon as a Cardiac Sonographer, then as Lead Cardiac Sonographer, in hospital, clinical, and mobile echo working environments. Barry maintains his Oregon RN license, and has RDCS and RCS registry in Adult Echocardiography.

Primary outside interests include photography, astronomy, and travel.

Janette Isaacson

Janette Isaacson, Assistant Professor, VT and Echo degree completion Program Director


Nuclear Medicine

Richard Hoylman

Richard Hoylman, Associate Professor, Program Director NMT


Rick is an Associate Professor and Program Director in the Nuclear Medicine Technology Program. He earned his B.S. degree from Oregon Tech in Allied Health with a major in Medical Technology. He then moved to Portland, OR to train in the Nuclear Medicine Technology Program at the V.A. Hospital and then worked at Oregon Health Science University for several years.

Rick returned to Klamath Falls in 1999 and worked at Sky Lakes Medical Center for two years. He joined the faculty at Oregon Tech in 2002. During this time, Rick has also worked per diem as a Nuclear Medicine Technologist at Group Health Eastside hospital in Redmond, WA and Klamath Heart Clinic in Klamath Falls, OR. Rick earned his Masters in Management degree from Southern Oregon University in 2006 and is registered with the NMTCB and a member of the Society of Nuclear Medicine.

Vanessa Bennett

Vanessa Bennett, Instructor

Shirlee Templeton

Shirlee Templeton, Instructor


Shirlee graduated from Portland State University in 1986 and later trained in the Nuclear Medicine Technology program at the Department of Veteran's Affairs in Portland, Oregon in 1992. She worked in clinical nuclear medicine at several hospitals in Oregon as well as Northern California, prior to coming to Oregon Tech in 2005 as an instructor in the Nuclear Medicine Technology program.

In addition to her teaching duties at Oregon Tech, Shirlee has made numerous trips to Honduras to teach nuclear medicine as a volunteer to staff at a non-profit cancer treatment center as well as at the National University of Honduras in Tegucigalpa.

Shirlee is currently serving her second term on the Oregon Board of Medical Imaging. She is also working on a Master’s degree in Radiation Health Physics from Oregon State University.


Don McDonnell

Don McDonnell, Assistant Professor, Program Director of Radiology


Don is an Assistant Professor and Program Director in the Radiologic Science Program. He earned his Bachelor’s Degree from the Oregon Tech Radiologic Science Program in 1997. After graduation, Don and his family elected to remain in Klamath Falls where he gained a wide range of skills in the family practice and hospital settings. He worked as a Cardiovascular Technologist at Sky Lakes Medical Center from 2000 through 2007 before becoming part of the full-time faculty in the Radiologic Science Program at Oregon Tech. While teaching, Don earned his Master’s Degree in Education with an emphasis Technology Integration from Western Governor’s University.

Don is passionate about teaching and considers it an honor to be a part of every RDSC students’ educational experience. He is motivated by hearing a student suddenly exclaim, “Ah, I get it.” He enjoys just about any outdoor activity with a true love for fishing, when he is not in the classroom.

Jenny Kellstrom

Jenny Kellstrom, M.Ed., ARRT (R)(M), Professor, Externship Coordinator

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Jenny Kellstrom has been teaching at Oregon Tech for 21 years. She currently is the externship coordinator for the radiologic science program. She spends a great deal of her time traveling to hospitals to visit senior radiology students.

Jenny has been married to Scott for 37 years. They have two grown daughters and two sons-in-law of which all are RNs. Also, included in her family are two adorable little grandsons and a third baby on the way. Scott was a former Oregon Tech Women’s basketball assistant coach, beginning the first season with Coach Tom Loney the year Oregon Tech reinstated women’s basketball after many years of its absence. 

Jenny is a student advocate not only watching over her students while they are completing their externship, but even after graduation, by writing reference letters, passing on employment opportunities, and encouraging them to become clinical instructors for the Oregon Tech radiology program. Jenny splits her time between the Wilsonville and Klamath Falls campuses. She lives in Gresham, Oregon.

Gary Zimmerman

Gary Zimmerman, Professor, RDSC Degree Completion Program Director


Gary Zimmerman trained in a 24 month hospital-based radiography program in Madison Wisconsin, before coming to Oregon Tech for one of the few undergraduate degrees available at that time. Following five years of experience as a staff technologist in all aspects of general Radiography, Fluoroscopy, Mobile and Surgical Radiography, Computed Tomography (CT), and Angiography, he started teaching as a clinical instructor in a hospital-based program in Oshkosh, and earned a graduate degree from the University of Wisconsin-Oshkosh.

In addition to 18 years of experience working in medical centers he holds registries in Radiography, CT, and Magnetic Resonance Imaging (MR), and is director of the Radiologic Science Degree Completion Program, teaching five on-line courses. Gary came to Oregon Tech in 1995, and says the Medical Imaging Department attracts a high caliber of motivated students, and he enjoys working with a dedicated group of experienced 

Richard Carson

Richard Carson, Assistant Professor

Stephen Schultz

Stephen Schultz, Professor


Vascular Technology

Christopher Caster

Christopher Caster, Associate Professor


Chris Caster is currently program director. Chris has an Associate of Applied Arts degree in Diesel Technology from Oregon Tech, a Bachelor of Science degree in Vascular Technology from Oregon Tech, a Bachelor of Science degree in Pastoral Studies from Eugene Bible College and a Masters of Arts degree in Education Curriculum and Technology from the University of Phoenix.

Chris is active as an usher and teacher in his church. Chris’ hobbies include projects around the house and building and flying miniature aircraft. Chris enjoys downhill skiing for sport activity.

Tanya McVay

Tanya McVay, Professor

I teach Anatomy & Physiology, and Physics for DMS, Vascular, and Echo.