Nonprofit · EIN 73-1416680
INTERNATIONAL ASSOCIATION FOR CHRONIC FATIGUE SYNDROME-ME
Tax-exempt · STONY BROOK, NY 11790
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $132,948 | $33,859 | $99,089 | $455,782 | $0 | $455,782 |
| December 31, 2024 | 990-EZ | $165,942 | $16,837 | $149,105 | $356,693 | $0 | $356,693 |
| December 31, 2023 | 990-EZ | $101,272 | $83,229 | $18,043 | $207,588 | $0 | $207,588 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $76,615
- Program service revenue
- $49,931
- Investment income
- $6,402
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $750
- Compensation of officers, directors and key employees
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fees and payments to contractors
- $9,555
- Printing, publications and postage
- $82
- Other expenses
- $23,472
- Program services (functional)
- $22,804
Balance sheet and other
- Total assets, start of year
- $356,693
- Total assets, end of year
- $455,782
- Total liabilities, end of year
- $0
- Net assets, end of year
- $455,782
- Cash, savings and investments
- $455,410
- Gross receipts
- $132,948
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-EZ for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| FRED FRIEDBERG | PRESIDENT | 7 | $0 |
| LILY CHU | VICE PRESIDENT | 7 | $0 |
| CHARLES LAPP | TREASURER | 5 | $0 |
| IRINA ROZENFELD | BOARD MEMBER | 3 | $0 |
| LUIS NACUL | BOARD MEMBER | 1 | $0 |
| FRIDBJORN SIGURDSSON | BOARD MEMBER | 2 | $0 |
| TIMOTHY HSIAO | BOARD MEMBER | 2 | $0 |
990-EZ for the year ended December 31, 2024: 9 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| FRED FRIEDBERG | PRESIDENT | 5 | $0 |
| LILY CHU | VICE PRESIDENT | 7 | $0 |
| CHARLES LAPP | TREASURER | 5 | $0 |
| IRINA ROZENFELD | BOARD MEMBER | 5 | $0 |
| SONYA MARSHALL-GRADISNICK | BOARD MEMBER | 1 | $0 |
| LUIS NACUL | BOARD MEMBER | 1 | $0 |
| THERESA DOWELL | BOARD MEMBER | 1 | $0 |
| ROCHELLE JOSELYN | BOARD MEMBER | 1 | $0 |
| FRIDBJORN SIGURDSSON | BOARD MEMBER | 2 | $0 |
990-EZ for the year ended December 31, 2023: 8 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| FRED FRIEDBERG | PRESIDENT | 5 | $0 |
| LILY CHU | VICE PRESIDENT | 7 | $0 |
| CHARLES LAPP | TREASURER | 5 | $0 |
| IRINA ROZENFELD | BOARD MEMBER | 5 | $0 |
| SONYA MARSHALL-GRADISNICK | BOARD MEMBER | 1 | $0 |
| LUIS NACUL | BOARD MEMBER | 1 | $0 |
| THERESA DOWELL | BOARD MEMBER | 1 | $0 |
| ROCHELLE JOSELYN | BOARD MEMBER | 1 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 583, STONY BROOK, NY 11790-0583
- In care of
- % HMC
- Mailing address (990-N for 2019)
- 7819 JONES BRANCH DRIVE NO 300, MCLEAN VA 22102
- Principal officer (990-N for 2019)
- FRED FRIEDBERGPHD, 7819 JONES BRANCH DRIVE NO 300, MCLEAN VA 22102
- Signed the 990-EZ
- CHARLES LAPP, TREASURER
- Phone
- (631) 632-8252
- Website
- WWW.IACFSME.ORG
- Return prepared by
- EASY OFFICE DBA JITASA
Mission
THE MISSION OF IACFS/ME IS TO PROMOTE, STIMULATE AND COORDINATE THE EXCHANGE OF IDEAS RELATED TO CHRONIC FATIGUE SYNDRONE(CFS) AND FIBROMYALGIA(FM) RESEARCH, PATIENT CARE AND TREATMENT IN ADDITION, THE IACFS/ME PERIODICALLY REVIEWS THE CURRENT RESEARCH AND TREATMENT LITERATURE AND MEDIA REPORTS FOR THE BENEFIT OF SCIENTISTS, CLINICIANS AND PATIENTS.
Program accomplishments
- ANNUAL CONFERENCE - WAS A VIRTUAL CONFERENCE OPEN TO PROFESSIONALS, PROVIDERS, AND THE PUBLIC. TOPICS WERE RELATED TO FATIGUE, ME/CFS, LONG COVID, AND RELATED ISSUES. FORMAT WAS PRESENTATIONS AND POSTERS.Expenses $17,970 · grants $750
- WEBSITE/MEMBERSHIP PROGRAM - IACFS/ME CONSISTS OF CLINICIANS, RESEARCHERS, AND PATIENTS/ FAMILIES AFFECTED BY ME/CFS. MEMBERSHIP INCLUDES DISCOUNTED CONFERENCE REGISTRATION/ JOURNAL SUBSCRIPTION FEES, ACCESS TO AN ONLINE JOURNAL CLUB, AND NETWORKING AMONG MEMBERS. CURRENTLY WE HAVE 149 MEMBERS AND 2000+ PEOPLE ON OUR E-MAIL LIST. OUR WEBSITE PROVIDES RESOURCES FOR CLINICANS, RESEARCHERS, AND THE PUBLIC ABOUT ME/CFS AND RELATED CONDITIONS.Expenses $4,834
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-EZ on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-EZ on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-EZ on file |
IRS record
- EIN
- 73-1416680
- 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
- 1993
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Medical research (H20Z)
- Assets (IRS master file)
- $455,782
- Income (IRS master file)
- $132,948
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $132,948 | $33,859 | $455,782 | XML |
| 990-EZ | December 2024 | $165,942 | $16,837 | $356,693 | IRS |
| 990-EZ | December 2023 | $101,272 | $83,229 | $207,588 | XML |
| 990-EZ | December 2022 | – | – | – | IRS |
| 990-EZ | December 2021 | – | – | – | IRS |
| 990-EZ | December 2020 | – | – | – | IRS |
| 990-N for 2019 Officer: FRED FRIEDBERGPHD | December 31, 2019 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-EZ | 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 73-1416680).
Questions about INTERNATIONAL ASSOCIATION FOR CHRONIC FATIGUE SYNDROME-ME
- What is the EIN of INTERNATIONAL ASSOCIATION FOR CHRONIC FATIGUE SYNDROME-ME?
- The employer identification number (EIN) of INTERNATIONAL ASSOCIATION FOR CHRONIC FATIGUE SYNDROME-ME is 73-1416680.
- Is INTERNATIONAL ASSOCIATION FOR CHRONIC FATIGUE SYNDROME-ME tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1993.
- Are donations to INTERNATIONAL ASSOCIATION FOR CHRONIC FATIGUE SYNDROME-ME tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does INTERNATIONAL ASSOCIATION FOR CHRONIC FATIGUE SYNDROME-ME 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 INTERNATIONAL ASSOCIATION FOR CHRONIC FATIGUE SYNDROME-ME 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 INTERNATIONAL ASSOCIATION FOR CHRONIC FATIGUE SYNDROME-ME last file with the IRS?
- The latest return in the IRS public files is the 990-EZ for the year ended December 2025.
- Who is the principal officer of INTERNATIONAL ASSOCIATION FOR CHRONIC FATIGUE SYNDROME-ME?
- The 990-N for 2019 names FRED FRIEDBERGPHD.
- Who are the officers and directors of INTERNATIONAL ASSOCIATION FOR CHRONIC FATIGUE SYNDROME-ME?
- The 990-EZ for the year ended December 31, 2025 lists 7 people; 0 received compensation from the organization.
- How much revenue does INTERNATIONAL ASSOCIATION FOR CHRONIC FATIGUE SYNDROME-ME have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $132,948, expenses of $33,859 and total assets of $455,782 at year end.
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