Nathan Riddell

Interventional Cardiologist

Dr. Nathan Riddell is a board-certified interventional cardiologist with Merrimack Valley Cardiology Associates, serving patients in Lowell and the greater Merrimack Valley community. Driven by a belief in the power of personal connection, Dr. Riddell takes a tailored approach to patient care, recognizing that no two patients are alike and that the most meaningful outcomes come from understanding the full picture of a patient’s life and health goals.

Dr. Riddell earned his medical degree from St. George’s University School of Medicine and completed his internal medicine residency at UMass Memorial Medical Center, followed by fellowships at St. Elizabeth’s Medical Center with a focus on cardiovascular disease and interventional cardiology.

His clinical expertise spans a broad range of cardiovascular conditions, with particular experience in aortic stenosis, acute myocardial infarction, interventional cardiac procedures, vascular medicine, and peripheral vascular disease. Dr. Riddell is affiliated with Lowell General Hospital and Tufts Medical Center.

Dr. Riddell also serves as part of the interventional care team at the Tufts Medicine, Lowell General Hospital Vascular + Vein Center in Lowell, MA, where he collaborates with vascular and interventional specialists to deliver comprehensive, patient-centered care to the greater Merrimack Valley community.