After completing medical school at the University of Virginia School of Medicine, he performed his residency at Riley Hospital for Children. His areas of expertise include anaphylaxis, asthma, and food allergy. Patient reviews placed Dr. Caplan at an average of 5.0 stars out of 5. He takes several insurance carriers, including Humana HMO, Humana Bronze, and Humana Catastrophic. His professional affiliations include Children's Hospital Colorado, Centura Health, and the University of Colorado Health (UCHealth).