Dr. Dejong graduated from Loyola University Chicago, Stritch School of Medicine and then he performed his residency at a hospital affiliated with Loyola University. His areas of expertise consist of thyroid problems, parathyroid disease, and adrenal disorders. Patient reviews placed him at an average of 5.0 stars out of 5. Humana HMO, Humana Bronze, and Humana Catastrophic are among the insurance carriers that Dr. Dejong accepts. He has received the distinction of Chicago Super Doctors. He is affiliated with Loyola Outpatient Center (LOC).