Dr. Herzig was born and raised in the Boston area. He graduated from the University of Pennsylvania with a degree in Psychology after completing additional coursework at Yale University and Tufts University. He received his doctorate in Clinical Psychology from Antioch University New England. Dr. Herzig has been a high school guidance counselor and teacher, and founded a pro bono counseling program in Roxbury. He has trained and practiced in several settings, including schools, health clinics, state hospitals, emergency rooms, and the federal prison system. He has received three years of individual supervision in couples therapy from Dr. William Michael Keane, founder of the Relationship Center of Boston.

After ten years in community mental health in the MetroWest suburbs, Dr. Herzig entered private practice full time in 2012. He has contributed his expertise in various settings, such as Harvard Medical School, Cambridge Hospital, Columbia University, Boston College, Boston University School of Medicine, and Tufts University. He is an annual guest lecturer at Harvard Medical School. In his spare time he is an admissions interviewer for Penn and enjoys coaching youth sports. He is a trivia buff, a decent softball player, and a mediocre bowler. Dr. Herzig lives in Lincoln with his wife and three children, who are being raised on a mix of unconditional love, personal responsibility, and 80's music.