Michael W. Cullen, M.D., is a general cardiologist at Mayo Clinic Health System in Owatonna, Minnesota. He also practices cardiology and echocardiography at Mayo Clinic in Rochester, Minnesota. In addition to seeing patients in the clinic, Dr. Cullen interprets echocardiograms and stress tests. He performs transesophageal echocardiograms and cardioversions. He is also available for consultations on hospitalized patients at Owatonna Hospital. He is also an active researcher and educator. He lectures regularly at educational meetings on topics covering the gamut of general cardiology. He teaches at Mayo Clinic School of Medicine and has received multiple grants for his work in educational research.