LAS VEGAS (KTNV) — A Southern Nevada man's experience with skin cancer is drawing attention to a growing healthcare access problem in the region, with long wait times and a shortage of primary care providers that affects thousands of residents. Martin Castillo noticed what he thought was a bug bite on his leg. What followed was a months-long journey through multiple doctors, specialists, and weeks of waiting before he finally received a diagnosis. "The dermatologist was treating me for a bug bite.