Dr. Dionisio James Mariano, MD

Dr. Dionisio Mariano specializes in cardiovascular disease and internal medicine, bringing over four decades of medical expertise to his practice. He earned his medical degree from the prestigious Mayo Clinic Alix School of Medicine and completed his residency at Mayo Clinic and Medical School. With 41 years of experience treating heart and vascular conditions, Dr. Mariano has developed extensive knowledge in managing complex cardiovascular cases. He is fluent in both Spanish and English, allowing him to serve diverse patient populations throughout Wisconsin.

Dr. Mariano practices at multiple locations across Wisconsin, including Grand Chute, Appleton, and Green Bay, with affiliations at ThedaCare Regional Medical Center Appleton, HSHS Saint Vincent Hospital, and Ascension NE Wisconsin Saint Elizabeth Hospital. He focuses on treating heart rhythm disorders such as atrial fibrillation and supraventricular tachycardia. His diagnostic expertise includes performing electrocardiograms and …metabolic testing to evaluate heart function and overall cardiovascular health. Patients have given Dr. Mariano an average rating of 4.0, reflecting their confidence in his comprehensive cardiac care approach.