How many pediatricians are there in Illinois?

1,225 active pediatricians are listed in Illinois per the 2026-05-06 CMS NPPES snapshot. That works out to 9.64 per 100,000 residents using U.S. Census 2024 population estimates.

Where does Illinois rank nationally for pediatrician supply?

Illinois ranks 16 of 51 U.S. states + DC by per-capita pediatrician 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/pediatrics-supply-by-state-2026.

1,322,867 nurse-staffing records · CMS PBJ

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PROVIDER ACCESS GAP · STATE

pediatricians per 100,000 in Illinois

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

9.64 active pediatricians per 100,000 residents — ranked 16 of 51 U.S. states + DC.

pediatricians per 100,000 residents

9.64

1,225 active pediatricians · 12,710,158 residents · Illinois

National rank: 16 / 51
Percentile: 71th
Underserved threshold: 8 / 100k
Quartile: Q2

Comparable areas

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

Hawaiirank 179.61 / 100k
Washingtonrank 189.31 / 100k

Wisconsinrank 19

9.31 / 100k

Citeable result

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Illinois has 1,225 active pediatricians (9.64 per 100,000 residents) — ranked 16 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: 8 per 100,000. Citation: Fonteum Research, /research/pediatrics-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 pediatrician-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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