How many cardiologists are there in Oklahoma?

299 active cardiologists are listed in Oklahoma per the 2026-05-06 CMS NPPES snapshot. That works out to 7.30 per 100,000 residents using U.S. Census 2024 population estimates.

Where does Oklahoma rank nationally for cardiologist supply?

Oklahoma ranks 42 of 51 U.S. states + DC by per-capita cardiologist density. It sits above the parent study's underserved threshold.

U.S. Centers for Medicare & Medicaid Services NPI Registry (NPPES) — public API Combined with U.S. Census Bureau Population Estimates Program, 2024 Vintage (V2024) Snapshot date: 2026-05-06. The full per-state dataset is published at fonteum.com/research/cardiology-supply-by-state-2026.

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cardiologists per 100,000 in Oklahoma

Name: Oklahoma — cardiologist supply per 100,000
Creator: Fonteum Research
Published: 2026-05-06
License: https://fonteum.com/editorial-policy

7.30 active cardiologists per 100,000 residents — ranked 42 of 51 U.S. states + DC.

cardiologists per 100,000 residents

7.30

299 active cardiologists · 4,095,393 residents · Oklahoma

National rank: 42 / 51
Percentile: 20th
Underserved threshold: 4 / 100k
Quartile: Q4

Comparable areas

Three states whose cardiologist per-100k density is closest to Oklahoma's — useful for benchmarking.

Nevadarank 417.44 / 100k
Texasrank 407.44 / 100k

Arkansasrank 43

7.09 / 100k

Citeable result

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Oklahoma has 299 active cardiologists (7.30 per 100,000 residents) — ranked 42 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.

Source provenance

U.S. Centers for Medicare & Medicaid Services NPI Registry (NPPES) — public API
U.S. Census Bureau Population Estimates Program, 2024 Vintage (V2024)
Snapshot date: 2026-05-06

Open the parent cardiologist-supply study →

Limitations

This figure measures density (per-capita supply), not access. Drive time, appointment availability, insurance acceptance, and wait times are not modeled here.
The CMS NPPES registry counts NPI-1 individual providers with the relevant taxonomy code. It does not capture PA-led or NP-led practices that operate under a different taxonomy.
NPPES does not publish a county-level field of practice in its public API. County- and ZIP-scoped queries surface state-level density, with the geographic context preserved on this page.
Population is the U.S. Census Bureau 2024 vintage estimate. Population shifts post-2024 are not yet reflected.
The "underserved" threshold is the parent study's transparent baseline cutoff; it is not a regulatory or clinical definition. See the parent study for the rationale.

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Compliance posture