Dr. John Hesselink graduated the medical school from the University of Wisconsin School of Medicine and Public Health. He did his internship at the Alameda County Medical Center and completed his residency program at the University of Wisconsin. A fellowship followed at the Massachusetts General Hospital. He is specialized in Radiology and board certified in Diagnostic Radiology and Neuroradiology. Dr. Hesselink has been in practice for more than 20 years and is affiliated with the Promise Hospital and Thornton Hospital. During his career, he has also contributed to several publications of medical interest.