From 1986 to 2003, Dr Martinez worked as a clinician and dental director for various dental programs for over a decade and a half. These programs predominantly served Medicaid enrollees. During this time, he worked with a migrant farm population at the Laredo Webb County Health Department in Texas. He also worked at the first Federally Qualified Health Center in the U.S., Geiger-Gibson Community Health Center in Dorchester, MA, and oversaw the Boston HealthCare for the Homeless Dental Program.