Dr. Kalker is a 1989 graduate of the Pennsylvania College of Podiatric Medicine. He completed his residency training in Podiatric Orthopedics at The Foot and Ankle Institute of the Pennsylvania College in 1990. He founded Kalker Podiatry in 1991 and has been practicing since that time in Newtown, Pennsylvania, and at a second location in Northeast Philadelphia.

Dr. Kalker has lectured extensively at the Temple University School of Podiatric Medicine in Philadelphia. He is an active member of the Newtown community. For ten years, he served as president of the Lower Bucks County Chapter of the American Diabetic Association. He is a current member and past president of the Rotary Club, and is a current member on the Board of Directors of the Bucks County Association for the Blind and Visually Impaired.