7.66 active cardiologists per 100,000 residents — ranked 37 of 51 U.S. states + DC.
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North Dakota has 61 active cardiologists (7.66 per 100,000 residents) — ranked 37 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/cardiology-supply-by-state-2026.