Maricopa County (4,654,147 residents) sits within Arizona, where dermatologists are listed at 5.62 per 100,000.
Three states whose dermatologist per-100k density is closest to Arizona's — useful for benchmarking.
Plain-text citation block — paste verbatim into a brief, story, or report.
Arizona has 426 active dermatologists (5.62 per 100,000 residents) — ranked 19 of 51 U.S. states + DC. Source: CMS NPPES NPI Registry + U.S. Census Bureau, snapshot 2026-05-06. Threshold for "underserved" in the parent study: 4 per 100,000. Citation: Fonteum Research, /research/dermatology-provider-supply-by-state-2026.