Open Medicine Foundation
Open Medicine Foundation is a public charity based in Agoura Hills, California. Formed in 2009, it funds collaborative medical research and education on multi-system chronic complex diseases, with a current focus on ME/CFS and Long COVID.
Open Medicine Foundation at a glance
In short: Open Medicine Foundation gave $1.4M across 13 grants in 2025 (avg $108K), mostly in Massachusetts. Source: 2025 IRS Form 990.
- Annual giving (2025)
- $1,403,713
- -43.9% vs 2024
- Grants made (2025)
- 13
- -27.8% vs 2024
- Average grant
- $107,978
- -22.3% vs 2024
- Median grant
- $54,605
- Total assets
- $8,641,350
- +18.2% vs 2024
- Primary geography
- Massachusetts (61% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated October 2026.
How to apply to Open Medicine Foundation
- Contact
Mailing address: 5737 Kanan Road 544, Agoura Hills, CA 91301
Phone: (650) 242-8669
Website: https://omf.ngo
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Open Medicine Foundation funds
How this funder distributes its grants
Top Recipients
Top 8 recipients in 2025
The largest 2025 recipient was The General Hospital Corporation ($500K). Together the top 8 received $1.1M.
Organizations only. It also paid 5 grants to individuals ($284,000), which are not listed by name.
Grant Size Distribution
66 grants across all recorded years
The most common grant size was under $50K: 26 grants of 66 (39%).
Geographic Focus
Where this funder awards grants
The 2025 grants went to recipients in several states. The largest shares of grant dollars went to Massachusetts (61%) and California (20%), followed by Nevada (9%), Utah (7%), and Texas (2%). The listed grants also include an individual recipient in Michigan.
Grant Distribution by State
Share of 2025 grant dollars across all 13 itemized grants.
States
Cities
How Open Medicine Foundation gives
- Giving fell 40% from 2022 to 2025. Method
From the foundation's IRS Form 990 filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2025, annual grant giving ranged from $1.4M (2025) to $2.5M (2024). In 2025 it made 13 grants totaling $1.4M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| The General Hospital Corporation Cambridge, MA | Computation & Network Medicine | $500,000 |
| The Brigham and Women's Hospital Inc Cambridge, MA | Post extertional malaise muscle biopsy study & lift trial | $300,000 |
| 5 grants to individuals Recipients not named | — | $284,000 |
| Simaron LLC Incline Village, NV | Mecfs Research | $120,000 |
| Bateman Horne Center of Excellence Salt Lake City, UT | Computation & Network Medicine | $100,000 |
| Board of Trustees of the Leland Stanford Junior University Redwood City, CA | Family Omics Study | $54,605 |
| Texas Tech University Health Sciences Center Lubbock, TX | PLRC Mosaics | $25,818 |
| Suet Ying Christin Chong Pacifica, CA | Fundraising for Decentralized Science | $12,450 |
| Social and Environmental Entrepreneurs (See) Inc Calabasas, CA | PLRC-Balvi Grant Funding Fiscal Sponsor | $6,840 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $8,641,350 | $5,487,605 | $4,573,645 | $1,403,713 | 13 | $230,517 |
| 2024 | $7,311,452 | $4,269,584 | $5,377,218 | $2,501,675 | 18 | $271,551 |
| 2023 | $7,790,244 | $6,058,625 | $6,304,102 | $2,165,340 | 15 | $173,834 |
| 2022 | $8,684,671 | $3,987,810 | $6,836,842 | $2,343,534 | 10 | $-5,686 |
| 2021 | $9,082,668 | $5,827,682 | $4,005,744 | $1,799,923 | 10 | $39,364 |
| 2020 | $7,627,636 | $4,062,970 | $4,360,322 | $1,940,380 | 10 | $9,037 |
| 2019 | $7,489,877 | $4,286,613 | $3,060,931 | $1,416,808 | 7 | $33,439 |
Research compiled by Grantable AI from public sources. Last updated October 2026.
Mission & Focus Areas
The organization’s stated mission is to fund collaborative medical research and education for multi-system chronic complex diseases. Its website says it aims to drive global collaborative research that unlocks disease biology, delivers precise diagnostics, and advances treatments. The filing identifies four primary goals: frame disease mechanisms and models; find effective treatments and diagnostic markers; increase accurate diagnoses; and ensure access to quality care.
Its research portfolio includes investigating disease mechanisms, developing diagnostic approaches, and supporting treatment trials, with a precision-medicine perspective. The organization says its initial focus is ME/CFS and Long COVID, with the aim of also finding answers relevant to other multi-system chronic complex diseases with similar symptoms.
Among its 2025 grantees, Stanford University received funding for a family omics study. Stanford describes its mission as combining distinction in undergraduate and graduate education with research. Social and Environmental Entrepreneurs, which received a grant, describes its mission as empowering, encouraging, and catalyzing projects that collaborate on positive social and environmental change.
Grantmaking
In filing year 2025, the foundation gave 13 grants totaling $1,403,713. Grant amounts ranged from $6,840 to $500,000, with a median grant of $54,605.
The largest grants included $500,000 to The General Hospital Corporation for computation and network medicine; $300,000 to The Brigham and Women’s Hospital for a post-exertional malaise muscle biopsy study and LIFT trial; and $120,000 to Simaron LLC for ME/CFS research. The Bateman Horne Center of Excellence received $100,000 for computation and network medicine. Stanford University received $54,605 for a family omics study, and Texas Tech University Health Sciences Center received $25,818 for PLRC mosaics. Individual recipients received grants for research and other stipends.
The 2025 filing says research grant proposals must be approved by the relevant collaborative research center director, the Scientific Advisory Board Executive Committee, and the foundation’s full board. After approval, the organization confirms grant information with the grantee institution, agrees on a payment schedule, and issues a grant agreement and project documentation for signature before disbursing funds.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Linda Tannenbaum as CEO and president; Kimberly Hicks as CFO, treasurer, and COO; Jillian Payne as chief development officer; and Danielle Meadows as VP of research programs. Lindsay Daguerressar is listed as director of development.
The listed board members are Deborah Rose, Hany Zayed, Vicki Shultz, Deborah Gould, and Connie Minett.
Open Medicine Foundation is led by Linda Tannenbaum, CEO & President since 2024 (on filings since 2019); 5 of 10 officers listed in 2025 are compensated.
Officers on the 2025 filing
Linda Tannenbaum
CEO & President
CEO, President & Programs Coordinator → CEO, President & Programs C, 2022
CEO, President & Programs C → CEO & President, 2024
On filings since 2019
40 hrs/week
$174K (2019) → $290K (2025)
Lindsay Daguerressar
Director of Development
On filings since 2024
40 hrs/week
$130K (2024) → $130K (2025)
Kimberly Hicks
CFO, Treasurer & COO
Treasurer → CFO, Treasurer & COO, 2021
On filings since 2019
40 hrs/week
$58K (2020) → $270K (2025)
Jillian Payne
Chief Devlopment Officer
Chief Development Officer → Chief Devlopment Officer, 2024
On filings since 2022
40 hrs/week
$159K (2022) → $215K (2025)
Danielle Meadows
Vice President of Research Programs
On filings since 2024
40 hrs/week
$167K (2024) → $167K (2025)
Deborah Rose
Board of Directors
On filings since 2019
5 hrs/week
No compensation reported
Hany Zayed
Board of Directors
On filings since 2019
5 hrs/week
No compensation reported
Deborah Gould
Board of Directors
On filings since 2022
5 hrs/week
No compensation reported
Vicki Shultz
Board of Directors
On filings since 2022
5 hrs/week
No compensation reported
Connie Minett
Board of Directors
On filings since 2023
5 hrs/week
No compensation reported
Former officers (10)
- Former: Shai Held (2020–2023) — Board of Directors
- Former: Patricia Linsley (2021–2022) — Secretary
- Former: Rp Channing Rodgers (2021–2022) — Board of Directors
- Former: Kathleen Morgan (2020–2021) — Vice President of Philanthropy
- Former: Carol Jensen (2019–2020) — Board of Directors
- Former: Katie Bach (2019–2020) — Board of Directors
- Former: Patti Linsley (2019–2020) — Secretary
- Former: Christopher Armstrong (2020) — Medical Researcher
- Former: Joseph Morin (2019) — Board of Directors
- Former: Marilyn Simon-Gersuk (2019) — Director of Communications
Data from IRS Form 990 filings, 2019–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $290K, to Linda Tannenbaum (CEO/President). 5 officers or directors reported compensation on that filing.
Frequently asked questions about Open Medicine Foundation
How much does Open Medicine Foundation give each year?
Open Medicine Foundation gave $1.4M across 13 grants in 2025, according to its 2025 IRS Form 990. In 2024 it gave $2.5M across 18 grants.
What is Open Medicine Foundation's typical grant size?
Open Medicine Foundation's median grant in 2025 was $54,605, and its average grant was $107,978, across 13 grants on its 2025 IRS Form 990.
Where does Open Medicine Foundation give grants?
Open Medicine Foundation gives mostly in Massachusetts: 61% of the grant dollars itemized on its 2025 IRS Form 990 went to recipients there. The next largest states were California (20%) and Nevada (9%). The most frequent recipient cities were Cambridge, MA (2 grants).
Does Open Medicine Foundation give general operating support?
Not in 2025: none of the 13 grants with a stated purpose on Open Medicine Foundation's 2025 IRS Form 990 were described as general or operating support.
Who are Open Medicine Foundation's largest grantees?
Open Medicine Foundation's largest 2025 grantees include The General Hospital Corporation ($500,000), The Brigham and Women's Hospital Inc ($300,000) and Simaron LLC ($120,000), according to its 2025 IRS Form 990. It also paid 5 grants to individuals ($284,000), which are not listed by name. Together they received 66% of its itemized 2025 grant dollars.
How large is Open Medicine Foundation?
Open Medicine Foundation reported $8.6M in total assets on its 2025 IRS Form 990. Its revenue that year was $5.5M.
What does Open Medicine Foundation fund?
The organization’s stated mission is to fund collaborative medical research and education for multi-system chronic complex diseases. Its website says it aims to drive global collaborative research that unlocks disease biology, delivers precise diagnostics, and advances treatments. See mission & focus areas ↑
How do I apply for a grant from Open Medicine Foundation?
Open Medicine Foundation has no public application process in the sources Grantable reviewed. Check omf.ngo for current guidelines, or contact the foundation directly before submitting a request.
What is Open Medicine Foundation's EIN?
Open Medicine Foundation's EIN (Employer Identification Number) is 26-4712664. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated October 2026. Sourced from IRS Form 990 filings. Research dossier generated October 2026.
Data update history
(8)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2020 (received by the IRS May 10, 2021)
- Updated Form 990 for fiscal year 2021 (received by the IRS May 26, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS May 3, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS May 9, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS May 14, 2025)
- Added Form 990 for fiscal year 2019 (received by the IRS May 6, 2020)
- Added Form 990 for fiscal year 2025 (received by the IRS May 13, 2026)
- IRS filings on file for fiscal years 2020–2024
Explore Open Grants
Browse active grant opportunities in Open Medicine Foundation's focus areas in our free grants database
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Cite this profile
Grantable. (2026). Open Medicine Foundation funder profile. GrantGraph. Retrieved October 13, 2026, from https://grantable.co/funders/open-medicine-foundation-morg_87d6471ab219486bba47fa66fc4bfa40
BibTeX
@misc{grantable_264712664_2026,
author = {{Grantable}},
title = {{Open Medicine Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/open-medicine-foundation-morg_87d6471ab219486bba47fa66fc4bfa40},
note = {Accessed 2026-10-13. Data licensed CC BY 4.0}
}The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.
Figures come from Open Medicine Foundation's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
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