(541) 322.2395


» Cardiology is a medical specialty and a branch of internal medicine concerned

with disorders of the heart.

Matthew Fedor, MD, FACC


Matthew Fedor, MD, FACC, is a member of Summit Medical Group Oregon Cardiology team. He is board certified in internal medicine, and cardiovascular diseases and clinical cardiac electrophysiology. Dr. Fedor completed his medical education at Washington University School of Medicine in St. Louis, MO. His internship and residency training in internal medicine as well as his fellowships in cardiology and cardiac electrophysiology were completed at the New York University Medical School, New York, NY.

Dr. Fedor specializes in treating patients with abnormal heart rhythms. He has done research on this topic and published multiple articles in peer-reviewed journals. His special passion lies in educating the community about management and prevention of atrial fibrillation, the most prevalent, costly and impactful of all cardiac rhythm disorders. Learn more about Dr. Fedor. 

Phone: (541) 382-2811

Ian C. Riddock, MD


Ian Riddock, MD is board certified in internal medicine, cardiovascular diseases, clinical lipidology and cardiovascular computed tomography. Dr. Riddock is also a certified specialist in clinical hypertension through the American Society of Hypertension. He joins SMGOR-BMC after completing medical school at Uniformed Services University in Bethesda, Maryland, residency at David Grant Medical Center, Travis Air Force Base, and his fellowship at Wilford Hall Medical Center, San Antonio, TX.

Dr. Riddock has special interest in preventive cardiology, clinical lipidology, personalized risk assessment, heart failure, chronic angina, and clinical research. Dr. Riddock especially values his two deployments to Afghanistan, which deepened his appreciation for the men and women serving our country and reinforced a team approach to delivering excellent health care. He enjoys educating patients about their health and providing thoughtful and targeted interventions.

In his spare time, Dr. Riddock enjoys spending quality time with his wife and two children, skiing, hiking, running, strength training, and camping. Learn more about Dr. Riddock. 

Phone: (541) 382-2811