oncologists per 100,000 in Maine

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Maine has 29 active oncologists (2.06 per 100,000 residents) — ranked 20 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: 3 per 100,000. Citation: Fonteum Research, /research/oncology-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

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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