THE RADIOLOGY EXPERTS
About Our Providers
All of our providers are skilled, fellowship-trained subspecialists who have received their instruction at prestigious medical institutions throughout the United States.
Our radiologists meet or exceed the ACR requirements for accreditation. We participate in the ACR RadPeer program and consistently surpass the national standard for quality; our Peer Review program is held as the gold standard in our state. We meet twice a month to review any case that is submitted to us by our referring providers, clinical facilities, Nightshift Radiology, or by the Oregon Heart and Vascular Institute, (OHVI) panel. RAPC not only participates in the ACR Rad Peer program but we also send random studies for QA purposes. RAPC also acts as a review panel for studies sent to us to evaluate quality of other radiologist and radiology practices.
All Radiology Associates providers are licensed to practice medicine in the States of Oregon, Alaska, and Washington. All are certified by the American Board of Radiology.
Meet Our Team
John Ekstrom, MDWomen’s Imaging, Musculoskeletal, Pediatrics
John Dohrman, MDNuclear Imaging
Donald Garbett, MDVascular, Interventional
Akshay Gupta, MDNeuroradiology
Jerrell Ingalls, MDMusculoskeletal, Women’s Imaging
Bernie Isuani, MDVascular, Interventional
Corey Orton, MDBody Imaging and Interventional
Jeff Anderson, MD, Ph.D.Neuroradiology
Marius Pakalniskis, MDMusculoskeletal, Women’s Imaging
Alex Schabel, MDNeuroradiology
Jonathan Sims, MD, MBA, FF-L1Women’s Imaging, Musculoskeletal
Stephan Thiede, MDNeuroradiology
Ashley Buice, MDBody Imaging, Nuclear Medicine
Ryan Tade, MDNeuroradiology
David Tsai, MDMusculoskeletal, Trauma
Dmitriy Kazimirko, MDVascular, Interventional
Brandon Roller, MD, Ph.D.Musculoskeletal
Paul Wilson, MDVascular, Interventional
Erik Young, MD, Ph.D.Body Imaging
Dariusz Zawierucha, MDVascular, Interventional
Alex Dabrowiecki, MDInterventional
Jonathan Jo, MDInterventional, Diagnostic
John Ekstrom, MD
John Dohrman, MD
Dr. John Dohrman specializes in Nuclear Imaging. He graduated from the University of Iowa Medical School in 2002. He completed his radiology residency at Indiana University Medical Center, where he also completed a fellowship in nuclear medicine. Dr. Dohrman joined Radiology Associates in July 2008.
Donald Garbett, MD
Dr. Donald Garbett specializes in Vascular and Interventional radiology. He studied medicine at University of Illinois in Chicago. He completed his Radiology residency at Aurora St. Luke’s in Milwaukee and topped off his preparations with a fellowship in Vascular Interventional Radiology at Indiana University. Dr. Garbett joined Radiology Associates in February 2017.
Akshay Gupta, MD
Dr. Akshay Gupta specializes in Neuroradiology. He completed his undergraduate education at Duke University and medical education at Louisiana State University. After residency at Tulane University he completed a two-year neuroradiology fellowship at the University of Utah. Dr. Gupta joined Radiology Associates in July 2005.
Jerrell Ingalls, MD
Dr. Jerrell Ingalls specializes in Musculoskeletal and also works in Women’s Imaging. He did his undergraduate work at Louisiana State University and went to medical school at Baylor College of Medicine in Houston, Texas. He completed his residency at Michigan State University and a fellowship at the University of Cincinnati. Dr. Ingalls joined Radiology Associates in August 2015.
Bernie Isuani, MD
Dr. Bernie Isuani specializes in Vascular and Interventional radiology. He received his medical degree from the University of Texas and completed his radiology residency at Vanderbilt University Medical Center in Nashville, Tennessee. He received an additional year of training in vascular and interventional radiology at the University of Utah. Dr. Isuani joined Radiology Associates in December 2004.
Corey Orton, MD
Dr. Corey specializes in Body Imaging and Interventional radiology. He attended college and medical school at Emory University. He completed his residency at the University of Mississippi Medical Center in Jackson, and then returned to Emory for a fellowship in abdominal imaging. Dr. Orton started work at Oregon Imaging Centers in July 2016.
Jeff Anderson, MD, Ph.D.
Jeff Anderson, MD, Ph.D., studied abstract mathematics and neuroscience at Northwestern University before completing residency and fellowship in neuroradiology at the University of Utah. Until joining Radiology Associates, he was a tenured Professor of Radiology and Bioengineering at the University of Utah where he was an attending neuroradiologist, Director of Functional Neuroimaging, and Principal Investigator of the Brain Network Laboratory. He is author of more than 100 peer-reviewed journal articles investigating the network organization of the brain in neurological and neurodevelopmental disorders, the neuroscience of religion and meditation, and the neuroscience of personality, including publications in Science, Nature Neuroscience, Neuron, and Proceedings of the National Academy of Sciences.
Marius Pakalniskis, MD
Dr. Marius Pakalniskis specializes in Musculoskeletal Imaging and Women’s Imaging. He studied medicine at Dartmouth’s Geisel School of Medicine in New Hampshire and did an internship at Resurrection Medical Center in Chicago, a residency at University of Iowa Hospitals and Clinics in Iowa City, and a fellowship in musculoskeletal imaging at the University of Washington Medical Center in Seattle. Dr. Pakalniskis joined Radiology Associates in July 2016.
Alex Schabel, MD
Dr. Alex Schabel specializes in Neuroradiology. He earned his medical degree from the University of Wisconsin in 2006 and completed an internship in general surgery at the University of Washington and a radiology residency and neuroradiology fellowship at the University of Utah. Dr. Schabel joined Radiology Associates in July 2013.
Jonathan Sims, MD, MBA, FF-L1
Dr. Jonathan Sims specializes in Women’s Imaging and Musculoskeletal radiology. He received his medical degree and MBA from the University of South Florida, where he also completed his residency and internship. In 2007, he completed his fellowship in musculoskeletal MRI. Dr. Sims joined Radiology Associates in July of 2008.
Stephan Thiede, MD
Dr. Stephan Thiede specializes in Neuroradiology. He received his medical degree and completed a radiology residency at the University of North Carolina, Chapel Hill. He also completed a two-year neuroradiology fellowship at the University of Utah. Dr. Thiede joined Radiology Associates in July 2005.
Ashley Buice, MD
Dr. Ashley Buice, our newest body radiologist, originally hails from Atlanta, where she grew up and went to school – and although she has deep roots in the South, she is thrilled to call Eugene home. After educational training with the group, she was “wowed” by the caliber of professionalism at OIC and decided to stay.
When asked, Dr. Buice beams “It’s been a really great start to my career and every day I’m really impressed by the group.” She loves the work life balance she has found in her new home, whether its providing diagnostic or interventional imaging services, or just spending time enjoying the outdoors with her dogs.
Ryan Tade, MD
Dr. Ryan Tade specializes in Neuroradiology. He received both his medical degree and Master of Science in Clinical Anatomy from Creighton University in Omaha, NE. He completed his residency in Diagnostic Radiology and Fellowship in Neuroradiology at Emory University in Atlanta, GA. Dr. Tade joined Radiology Associates in July 2020.
David Tsai, MD
Dr. David Tsai specializes in Musculoskeletal and Trauma radiology. He received his medical degree from the University of Missouri-Kansas City. He trained in diagnostic radiology at the University of Miami/Jackson Memorial Medical Center. Dr. Tsai completed his fellowship training at Washington University’s Mallinckrodt Institute of Radiology in musculoskeletal imaging. He also completed a second fellowship at University of Washington, Harborview Medical Center in Trauma and Emergency Imaging. Dr. Tsai joined Radiology Associates in July 2005.
Dmitriy Kazimirko, MD
Dr. Dmitriy Kazimirko specializes in Vascular and Interventional radiology. He graduated with honors from Northeast Ohio Medical University followed by postgraduate training in Diagnostic Radiology at the University of Mississippi. He completed his fellowship in Vascular and Interventional Radiology at the University of Colorado. Dr. Kazimirko joined Radiology Associates in July of 2019.
Brandon Roller, MD, Ph.D.
Dr. Brandon Roller specializes in Musculoskeletal Radiology. He received his medical degree and a Doctorate in Pathobiology from the University of Missouri. His postgraduate training in diagnostic radiology and fellowship was completed at Wake Forest School of Medicine. Additionally, he has worked in the field of orthobiologic product development and continues to consult for companies within the orthopedic industry. Dr. Roller joined Radiology Associates in July 2020.
Paul Wilson, MD
Dr. Paul Wilson specializes in Vascular and Interventional radiology. He received his medical training in Portland at the former University of Oregon Medical School – now Oregon Health and Science University. After medical school he completed a fellowship program at University of California, San Diego, in ultrasound, CT and angiography. Dr. Wilson has been instrumental in developing interventional and angioplasty services in the Northwest. He joined Radiology Associates in July 1979.
Erik Young, MD, Ph.D.
Dr. Erik Young specializes in Body Imaging. He has a doctorate in theoretical physics besides his medical degree from the University of Arkansas, where he also served his residency training. He did a radiology fellowship in body imaging at the University of California. Dr. Young joined Radiology Associates in July 2008.
Dariusz Zawierucha, MD
Dr. Dariusz Zawierucha specializes in Vascular and Interventional radiology. He did his medical training at Stanford Medical School and completed his residency there in diagnostic radiology and fellowship in interventional radiology. Dr. Zawierucha joined Radiology Associates in October 2010.
Alex Dabrowiecki, MD
Dr. Dabrowiecki (Dom-bro-viet-ski) was born and raised in the Bay Area in Northern California. Prior to medical school he worked as a paramedic – which is how he discovered his love for medicine. He returned to school and graduated from the University of California, Davis with a major in psychology. From there he went on to graduate summa cum laude from St. George’s University medical school. He matriculated into diagnostic radiology residency at Emory University in Atlanta and was Chief Resident his final year. After Emory, Dr. Dabrowiecki moved to Oregon and completed his Interventional Radiology Fellowship at the Dotter Department of Interventional Radiology at Oregon Health and Sciences University. Outside of work, he spends nearly all his time with his wife, Brittany, and his three young children. He enjoys all types of outdoor activities including cycling, ultimate frisbee, hiking, and traveling. He’s an avid SF Giants fan and tries to attend a game anytime he’s back in the Bay Area. Oregon Imaging’s goal is to make him a Duck Fan. In his own words –
“My family and I are extremely excited to be planting our roots in Eugene as our new home!”
Jonathan Jo, MD
Jonathan Jo, MD, received his medical degree at Weill Cornell Medical College in New York City and completed his Diagnostic Radiology residency and interventional radiology fellowship at University of California, San Francisco, where he also served as Chief Resident. He comes to Oregon from his home state of California and is an avid runner, cyclist, and backpacker. He has been enjoying all the beauty of the Pacific Northwest and explore the many local trails, roads, and mountains. He enjoys eating ice cream, cooking, baking, and tasting new beers. He is currently trying to keep his houseplants alive and is working on his fishing skills.