Honolulu, HI

HMSA FOUNDATION

EIN 99-0250429

Community & Economic Development Community Foundations & Local Giving

Mission

Uplifting community practices that build health and connection among people and place.

IRS-recognized 501(c)(3) private non-operating foundation Contributions are tax-deductible

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About HMSA FOUNDATION

This profile covers HMSA Foundation (EIN 99-0250429), a Honolulu-based private foundation affiliated with the Hawaii Medical Service Association; the EIN and filing status are confirmed through public 990/filing records. ([projects.propublica.org](https://projects.propublica.org/nonprofits/organizations/990250429?utm_source=openai))

HMSA Foundation’s stated mission is to uplift community practices that build health and connection among people and place; it emphasizes unrestricted, multi-year support, relationship-building with nonprofit partners, and simplifying administrative burdens for community organizations. ([hmsafoundation.org](https://hmsafoundation.org/))

In recent years the Foundation shifted (beginning in 2019) to a cohort-style (“Hui”) funding model focused on long-term, unrestricted support and capacity building; the Foundation announced a second Hui cohort in 2025 and continues active grantmaking and partnership work across Hawaii. Recent grantmaking patterns show concentrated multi-year investments and several sizable awards in 2023–2024. ([hmsafoundation.org](https://hmsafoundation.org/hui-partners))

Notable achievements

Established endowment and long-term grantmaking

HMSA established a $20 million endowment and began systematic grantmaking in the late 1990s, creating a sustained funding platform for health-related initiatives across Hawaiʻi. ([hmsafoundation.org](https://hmsafoundation.org/about-hmsaf))

Adopted Hui (cohort) funding model

In 2019 the Foundation transitioned to a Hui cohort model—providing multi-year, unrestricted funding and non-financial supports (capacity building, knowledge exchange) to community-rooted organizations. ([hmsafoundation.org](https://hmsafoundation.org/hui-partners))

Second Hui announced (2025) and focused multi-year investments

The Foundation announced a second Hui in 2025, naming eight statewide partner organizations and continuing multi-year commitments and partnership investments that concentrated giving in recent years. ([hmsafoundation.org](https://hmsafoundation.org/hui-partners))

At a glance

Total assets: $16.3M
Tax status: 501(c)(3)Private non-operating foundation
EIN: 99-0250429
Location: Honolulu, HI
Website: hmsafoundation.org
On Mahalo since: May 2026

Financial figures from the IRS Business Master File, the IRS’s registry of tax-exempt organizations.

Recognition

Public 990/filings and nonprofit profiles: HMSA Foundation is documented as EIN 99-0250429 in public tax filings and nonprofit databases (990-PF filings are available). ([projects.propublica.org](https://projects.propublica.org/nonprofits/organizations/990250429?utm_source=openai))

Profiled by philanthropic data services for grant activity: multiple grant-tracking sources report the Foundation’s grant counts, award sizes, and concentrated 2024 giving (including at least one large grant reported around $1.2M). ([zeffy.com](https://www.zeffy.com/foundations/990250429?utm_source=openai))

Part of HMSA’s broader community impact work: the Foundation’s activities align with HMSA’s statewide community investments and impact reporting in recent years. ([hmsa.com](https://www.hmsa.com/content/assets/2024-community-impact-report.pdf?utm_source=openai))

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