He attended medical school at the University of Illinois College of Medicine at Chicago. He trained at Michael Reese Hospital for residency. Dr. Halline's clinical interests include colorectal cancer and endoscopic ultrasound (EUS). Dr. Halline is an in-network provider for Humana HMO, Humana Bronze, and Humana Catastrophic, as well as other insurance carriers. He has received the following distinction: Chicago Super Doctors. He is professionally affiliated with the University of Illinois Hospital & Health Sciences System (UI Health), Northwestern University Feinberg School of Medicine, and Jesse Brown VA Medical Center.