The Maine Mental Health Workforce
Maine has 9,452 active mental-health providers registered at practice addresses in the state, or 668 per 100,000 residents. That ranks 6 of 51 nationally, against a US average of 433.5.
9,452
active providers
668
per 100,000 residents
#6
of 51 jurisdictions by density
Key findings
- Maine registers 668 active providers per 100,000 residents. That ranks 6 of 51 jurisdictions, above the national 433.5. #
- Cumberland County has the state's highest registered density (1020.6 per 100k). #
- Social workers are the largest group at 44.9% of Maine's registered workforce (US: 30.4%). #
- 377 providers with a Maine practice address first entered the NPI registry in 2025, versus 330 in 2019. These are registry entries, not licenses issued. #
- 57% of Maine providers share a registered practice location with six or more in-scope providers. #
Providers per 100,000 by county
Providers are allocated to counties from their practice ZIP code. The same values appear in the table.
| County | Population | Providers | Per 100k |
|---|---|---|---|
| Cumberland County | 317,222 | 3,238 | 1020.6 |
| Penobscot County | 157,967 | 1,216 | 770.1 |
| York County | 222,434 | 1,175 | 528.4 |
| Kennebec County | 129,067 | 902 | 698.9 |
| Androscoggin County | 116,487 | 683 | 586.3 |
| Aroostook County | 66,609 | 498 | 746.9 |
| Hancock County | 57,171 | 300 | 524 |
| Knox County | 41,117 | 282 | 685.8 |
| Washington County | 31,334 | 241 | 770.5 |
| Oxford County | 60,346 | 213 | 352.3 |
| Somerset County | 51,620 | 173 | 335.2 |
| Waldo County | 40,693 | 155 | 380.7 |
| Franklin County | 30,824 | 116 | 374.8 |
| Sagadahoc County | 37,979 | 107 | 281.7 |
| Lincoln County | 36,595 | 99 | 270.5 |
| Piscataquis County | 17,409 | 50 | 287.2 |
Provider-type mix vs the national picture
Each provider counts once under their primary taxonomy; the US share is printed beside each Maine figure for comparison.
When Maine's providers entered the registry
Active providers by NPI registry-entry year. Registry entry is not licensure. Clinicians typically register when they start billing, so this measures registrations, not the workforce itself. 2026 is a partial year.
Practice-location size
Share of Maine providers at single- vs multi-provider practice locations, by normalized practice address. This is a proxy; see the limitations below.
Get the numbers
County-level figures for all states (including Maine) are in the county CSV; state totals and mix are in their own files. Everything is CC BY 4.0, so cite certification.app, "US Mental Health Workforce" (June 2026 NPPES snapshot).
Use this chart
<a href="https://www.certification.app/data/mental-health-workforce"><img src="https://www.certification.app/data/mental-health-workforce/charts/me-county-density.svg" alt="Maine mental health providers per 100,000 residents by county" width="100%" /></a> <p style="font-size:12px">"Maine mental health providers per 100k by county, June 2026 snapshot" by <a href="https://www.certification.app/data/mental-health-workforce">certification.app</a>, CC BY 4.0</p>
Reading these numbers
Counts are NPPES registrations at Maine practice addresses. They are headcounts, not FTEs or license tallies. Telehealth and multi-state practice are invisible; taxonomy self-designation is not license verification; the registry lags moves and retirements. Details: methodology.