Dr. Kagen is the Site Chair of Diagnostic, Molecular and Interventional Radiology at Mount Sinai West and Mount Sinai Morningside Hospitals since 2015. He also is the past Co-Founder and Chief Medical Officer of Nines, an artificial intelligence powered radiology-as-a-service solution.

Dr. Alexander Kagen is a recognized authority in the field of Body MRI and has been named as one of New York’s Top Doctors every year since 2019 by New York Magazine. He serves on local, national and international committees and has lectured both nationally and internationally on imaging of liver disease, prostate, gastrointestinal and pancreaticobiliary MRI. He served as Chair of the Radiology-Pathology working group of the American College of Radiology (ACR) Liver Imaging and Reporting Database System (LI-RADS), and is a member of the ACR Magnetic Resonance Prostate Imaging and Reporting Database System (MR-PI-RADS) Committee.

Dr. Kagen received his medical degree from the College of Medicine at SUNY Downstate Medical Center where he also completed his residency, after a medicine internship at Lenox Hill Hospital. He completed a clinical fellowship in Body MRI at Johns Hopkins Hospital in Baltimore.