Despite documented healthcare disparities among Latino autistic children, little is known about how their families experience the autism "diagnostic odyssey." Pediatricians have a critical role in the "diagnostic odyssey," but when it becomes arduous, parents may also use complementary health approaches, particularly when conventional care does not adequately address their concerns. Shared decision-making is important in healthcare for autistic children, especially when parents also choose complementary health approaches; but little is known about shared decision-making among Latino parents of autistic children. We conducted a 12-month ethnography with 12 bicultural/bilingual Latino families of autistic children to understand their healthcare experiences (conventional and complementary health approaches) for their children, focusing on shared decision-making. Thematic analysis revealed: (1) most pediatricians were involved early in the "diagnostic odyssey" but were largely uninvolved thereafter; (2) conventional healthcare was satisfactory to the parents for physical health, but not developmental issues; and (3) parents who used complementary health approaches were more frustrated about a lack of autism information from pediatricians than those who did not. Finally, (4) we describe two exemplars of successful shared decision-making between Latino parents and pediatricians. Increasing pediatricians' autism knowledge and ability to discuss complementary health approaches may facilitate shared decision-making and reduce healthcare disparities for Latino autistic children.