Dr. Sadel has been practicing medicine since 2000.  He started out as chief resident at Albert Einstein medical center.  There he developed an interest in administrative duties and teaching the residents.  He created the Intern Survival guide while in his residency.   After his chief residency he joined Comprehensive Internal Medicine Associates where he practiced until December 2008.  Starting in January 2009 Dr. Sadel has decided to open his solo practice - Keith Sadel, MD Internal Medicine.

Dr. Sadel's interest are in preventative medicine, treatment of hypertension, diabetes mellitus, and hypercholesterolemia.

Dr. Sadel has hospital privileges at Holy Redeemer Hospital.  He currently admits and follows his inpatient population.