After earning a B.S. in Mathematics at the State University of New York at Binghamton, she attended the Simon School at University of Rochester and received her M.B.A. and then attended the State University of New York at Stony Brook where she received her M.D.

She was a Resident and Chief Resident in Pediatrics at New York Hospital. Dr. Bostwick is involved with teaching of medical students and pediatric residents in both the inpatient and outpatient settings and chairs the Pediatric Education Committee. She received a Clinical Excellence award while a resident at New York Hospital. She has also received teaching awards as a faculty member from the pediatric residents as well as the Academy of Pediatrics. She is a member of the Ambulatory Pediatric Association and the Association of Pediatric Program Directors.