Nonprofit · EIN 26-4712664
OPEN MEDICINE FOUNDATION INC
Tax-exempt (reinstated) · AGOURA HILLS, CA 91301
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $5,487,605 | $4,573,645 | $913,960 | $8,641,350 | $4,205,628 | $4,435,722 |
| December 31, 2024 | 990 (amended) | $4,269,584 | $5,377,218 | -$1,107,634 | $7,311,452 | $3,789,690 | $3,521,762 |
| December 31, 2023 | 990 | $6,058,625 | $6,304,102 | -$245,477 | $7,790,244 | $3,160,848 | $4,629,396 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $5,136,428
- Program service revenue
- $0
- Investment income
- $230,517
- Other revenue
- $120,660
Expenses
- Grants and similar amounts paid
- $2,525,383
- Compensation of officers, directors and key employees
- $560,001
- Other salaries and wages
- $808,042
- Salaries, compensation and benefits (total)
- $1,541,969
- Professional fundraising fees
- $0
- Occupancy
- $7,307
- Travel
- $44,273
- Depreciation
- $138
- Program services (functional)
- $3,774,197
- Management and general (functional)
- $266,673
- Fundraising (functional)
- $532,775
Balance sheet and other
- Total assets, start of year
- $7,311,452
- Total assets, end of year
- $8,641,350
- Total liabilities, end of year
- $4,205,628
- Net assets, end of year
- $4,435,722
- Land, buildings and equipment
- $1,184
- Net assets without donor restrictions
- $3,176,379
- Net assets with donor restrictions
- $1,259,343
- Gross receipts
- $5,487,605
- Employees
- 7
- Volunteers
- 7
- Year formed
- 2009
- State of legal domicile
- CA
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| LINDA TANNENBAUM | CEO/PRESIDENT Trustee or director, Officer | 40 | $289,999 | $18,700 |
| KIMBERLY HICKS | CFO/TREASURER & COO Trustee or director, Officer | 40 | $270,000 | $18,100 |
| JILLIAN PAYNE | CHIEF DEVLOPMENT OFFICER Highest-paid employee | 40 | $215,000 | $16,450 |
| DANIELLE MEADOWS | VP OF RESEARCH PROGRAMS Highest-paid employee | 40 | $166,667 | $15,724 |
| LINDSAY DAGUERRESSAR | DIRECTOR OF DEVELOPMENT Highest-paid employee | 40 | $130,000 | $13,900 |
| DEBORAH ROSE | BOARD OF DIRECTORS Trustee or director | 5 | $0 | $0 |
| HANY ZAYED | BOARD OF DIRECTORS Trustee or director | 5 | $0 | $0 |
| VICKI SHULTZ | BOARD OF DIRECTORS Trustee or director | 5 | $0 | $0 |
| DEBORAH GOULD | BOARD OF DIRECTORS Trustee or director | 5 | $0 | $0 |
| CONNIE MINETT | BOARD OF DIRECTORS Trustee or director | 5 | $0 | $0 |
990 for the year ended December 31, 2024: 10 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| LINDA TANNENBAUM | CEO/PRESIDENT Trustee or director, Officer | 40 | $289,999 |
| KIMBERLY HICKS | CFO/TREASURER & COO Trustee or director, Officer | 40 | $270,000 |
| JILLIAN PAYNE | CHIEF DEVLOPMENT OFFICER Highest-paid employee | 40 | $215,000 |
| DANIELLE MEADOWS | VP OF RESEARCH PROGRAMS Highest-paid employee | 40 | $166,667 |
| LINDSAY DAGUERRESSAR | DIRECTOR OF DEVELOPMENT Highest-paid employee | 40 | $130,000 |
| DEBORAH ROSE | BOARD OF DIRECTORS Trustee or director | 5 | $0 |
| HANY ZAYED | BOARD OF DIRECTORS Trustee or director | 5 | $0 |
| VICKI SHULTZ | BOARD OF DIRECTORS Trustee or director | 5 | $0 |
| DEBORAH GOULD | BOARD OF DIRECTORS Trustee or director | 5 | $0 |
| CONNIE MINETT | BOARD OF DIRECTORS Trustee or director | 5 | $0 |
990 for the year ended December 31, 2023: 9 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| LINDA TANNENBAUM | CEO/PRESIDENT & PROGRAMS C Trustee or director, Officer | 40 | $290,000 | $5,000 |
| KIMBERLY HICKS | CFO/TREASURER & COO Trustee or director, Officer | 40 | $270,000 | $5,000 |
| JILLIAN PAYNE | CHIEF DEVELOPMENT OFFICER Officer | 40 | $215,000 | $5,000 |
| SHAI HELD | BOARD OF DIRECTORS Trustee or director | 5 | $0 | $0 |
| DEBORAH ROSE | BOARD OF DIRECTORS Trustee or director | 5 | $0 | $0 |
| HANY ZAYED | BOARD OF DIRECTORS Trustee or director | 5 | $0 | $0 |
| VICKI SHULTZ | BOARD OF DIRECTORS Trustee or director | 5 | $0 | $0 |
| DEBORAH GOULD | BOARD OF DIRECTORS Trustee or director | 5 | $0 | $0 |
| CONNIE MINETT | BOARD OF DIRECTORS Trustee or director | 5 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 5737 KANAN RD, AGOURA HILLS, CA 91301-1601
- In care of
- % LINDA TANNENBAUM
- Principal officer (990 for 2025)
- KIMBERLY HICKS, 5737 KANAN ROAD 544, AGOURA HILLS, CA 91301
- Signed the 990
- KIMBERLY HICKS, COO/CFO/TREASURER
- Phone
- (650) 242-8669
- Website
- OMF.NGO
- Return prepared by
- PDM LLP
California records
California keeps its own records of charities and corporations. Search them by EIN 26-4712664 or by the name OPEN MEDICINE FOUNDATION INC.
- Attorney General, Registry of Charities and Fundraisers
- Registration status and filed reports (CT-TR-1, RRF-1)
- Secretary of State, bizfile Online
- Corporation status, entity number, agent for service
- Franchise Tax Board
- Entity status letter (state tax exemption, good standing)
Mission
FUNDS COLLABORATIVE MEDICAL RESEARCH AND EDUCATION FOR MULTI-SYSTEM CHRONIC COMPLEX DISEASES.
Program accomplishments
- THE ORGANIZATION SUPPORTS RESEARCH THROUGH 6 COLLABORATIVE RESEARCH CENTERS AND BY BRINGING TOGETHER A COMMUNITY OF "THOUGHT LEADERS," PATIENTS, CLINICIANS AND RESEARCHERS FOR TARGETED INITIATIVES. OPEN MEDICINE FOUNDATION IS CURRENTLY FOCUSED ON RESEARCHING MYALGIC ENCEPHALOMYELITIS/CHRONIC FATIGUE SYNDROME ("ME/CFS"), AND LONG COVID, IN HOPES OF ALSO REVEALING ANSWERS TO OTHER MULTI SYSTEM CHRONIC COMPLEX DISEASES THAT SHARE SIMILAR SYMPTOMS. ITS 4 PRIMARY GOALS ARE TO: 1).FRAME CLEAR DISEASE MECHANISMS AND MODELS. 2).FIND EFFECTIVE TREATMENT AND DIAGNOSTIC MARKERS. 3). INCREASE ACCURRATE DIAGNOSES. 4). ENSURE ACCESS TO QUALITY CARE.Expenses $3,774,197 · grants $2,525,383
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 26-4712664
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2013
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Medical research (H12)
- Assets (IRS master file)
- $8,641,350
- Income (IRS master file)
- $5,487,605
Revocation and reinstatement
- Exemption revoked
- May 15, 2012
- Posted by the IRS
- February 11, 2013
- Reinstated
- Effective July 15, 2012
From the IRS automatic revocation list: organizations that did not file a required return or e-Postcard for three consecutive years.
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $5,487,605 | $4,573,645 | $8,641,350 | IRS |
| 990 | December 2024 | $4,269,584 | $5,377,218 | $7,311,452 | IRS |
| 990 | December 2023 | $6,058,625 | $6,304,102 | $7,790,244 | XML |
| 990 | December 2022 | $3,987,810 | $6,836,842 | $8,684,671 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2019 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 26-4712664).
Questions about OPEN MEDICINE FOUNDATION INC
- What is the EIN of OPEN MEDICINE FOUNDATION INC?
- The employer identification number (EIN) of OPEN MEDICINE FOUNDATION INC is 26-4712664.
- Is OPEN MEDICINE FOUNDATION INC tax-exempt?
- Yes. The IRS revoked its exemption on May 15, 2012 and reinstated it effective July 15, 2012.
- Are donations to OPEN MEDICINE FOUNDATION INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does OPEN MEDICINE FOUNDATION INC file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of OPEN MEDICINE FOUNDATION INC due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did OPEN MEDICINE FOUNDATION INC last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of OPEN MEDICINE FOUNDATION INC?
- The 990 for the year ended December 31, 2025 names KIMBERLY HICKS.
- Who are the officers and directors of OPEN MEDICINE FOUNDATION INC?
- The 990 for the year ended December 31, 2025 lists 10 people; 5 received compensation from the organization, the highest $289,999 (LINDA TANNENBAUM, CEO/PRESIDENT).
- How much revenue does OPEN MEDICINE FOUNDATION INC have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $5,487,605, expenses of $4,573,645 and total assets of $8,641,350 at year end.
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