International Society For Preventive Oncology Inc

Middleburg, FL
Tax-exempt since Aug. 1974
EIN: 23-7389140

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This organization is not listed in the IRS's most recent list of tax exempt organizations, but we have data associated with this Employer Identification Number.

Type of Nonprofit

Designated as a 501(c)(3) Organizations for any of the following purposes: religious, educational, charitable, scientific, literary, testing for public safety, fostering national or international amateur sports competition (as long as it doesn't provide athletic facilities or equipment), or the prevention of cruelty to children or animals.

Revenue

$69.6k (2025)

Expenses

$393k (2025)

Total Assets

$0 (2025)

Total Liabilities

$0 (2025)

Years with missing data

Source: Form 990 tax filings from 2011 to 2025

Tax Filings by Year

Form 990 is an information return that most organizations claiming federal tax-exempt status must file yearly with the IRS. Nonprofit Explorer has IRS digitized Form 990 data for filings processed in 2012 and later. If this organization filed an amended return, it may not be reflected below. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Form 990 data is from the IRS.

Fiscal Year Ending April
2025

Revenue

$69,577

Expenses

$393,084

Net Income

-$323,507

Net Assets

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$8,166	11.7%
Sales of Assets	$56,311	80.9%
Other Income	$5,100	7.3%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$345,401	87.9%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$0
Total Liabilities	$0
Net Assets	$0

Compensation

Key Employees and Officers	Compensation	Other
Joseph Grimaldo (Director)	$0	$0
Carmen Carmona (President/Treasurer/Clerk)	$0	$0
Nathaniel Turner (Director)	$0	$0

990-PF

Filed on July 8, 2025

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

XML

Fiscal Year Ending April
2024

Revenue

$7,610

Expenses

$25,052

Net Income

-$17,442

Net Assets

$323,507

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$8,195	> 100%
Sales of Assets	-$585
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$20,000	79.8%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$323,507
Total Liabilities	$0
Net Assets	$323,507

Compensation

Key Employees and Officers	Compensation	Other
Joseph Grimaldo (Director)	$0	$0
Carmen Carmona (President/Treasurer/Clerk)	$0	$0
Nathaniel Turner (Director)	$0	$0

990-PF

Filed on Aug. 26, 2024

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

XML

Fiscal Year Ending April
2023

Revenue

$3,587

Expenses

$39,358

Net Income

-$35,771

Net Assets

$340,949

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$9,538	> 100%
Sales of Assets	-$5,951
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$34,826	88.5%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$340,949
Total Liabilities	$0
Net Assets	$340,949

Compensation

Key Employees and Officers	Compensation	Other
Joseph Grimaldo (Director)	$0	$0
Carmen Carmona (President/Treasurer/Clerk)	$0	$0
Nathaniel Turner (Director)	$0	$0

990-PF

Filed on Nov. 15, 2023

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending April
2022

Revenue

$35,294

Expenses

$43,704

Net Income

-$8,410

Net Assets

$376,720

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$11,100	31.5%
Sales of Assets	$24,194	68.5%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$43,261	99.0%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$376,720
Total Liabilities	$0
Net Assets	$376,720

Compensation

Key Employees and Officers	Compensation	Other
Joseph Grimaldo (Director)	$0	$0
Carmen Carmona (President/Treasurer/Clerk)	$0	$0
Nathaniel Turner (Director)	$0	$0

990-PF

Filed on Nov. 9, 2022

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

XML

Fiscal Year Ending April
2021

Revenue

$38,885

Expenses

$48,501

Net Income

-$9,616

Net Assets

$385,129

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$9,500	24.4%
Interest Revenue	$0
Dividends	$7,782	20.0%
Sales of Assets	$21,603	55.6%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$41,529	85.6%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$385,130
Total Liabilities	$1
Net Assets	$385,129

Compensation

Key Employees and Officers	Compensation	Other
Suzanne Nieburgs Md (President/Treasurer/Clerk)	$0	$0
Joseph Grimaldo (Director)	$0	$0
Carmen Agostini (Director)	$0	$0
Nathaniel Turner (Director)	$0	$0

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990-PF

Filed on Sept. 10, 2021

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

XML

Fiscal Year Ending April
2020

Revenue

$6,080

Expenses

$40,108

Net Income

-$34,028

Net Assets

$394,745

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$4,962	81.6%
Interest Revenue	$0
Dividends	$9,518	> 100%
Sales of Assets	$0
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$36,427	90.8%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$394,746
Total Liabilities	$1
Net Assets	$394,745

Compensation

Key Employees and Officers	Compensation	Other
Suzanne Nieburgs Md (President/Treasurer/Clerk)	$0	$0
Joseph Grimaldo (Director)	$0	$0
Carmen Agostini (Director)	$0	$0
Nathaniel Turner (Director)	$0	$0

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990-PF

Filed on Oct. 2, 2020

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

XML

Fiscal Year Ending April
2019

Revenue

$100,296

Expenses

$16,205

Net Income

$84,091

Net Assets

$428,773

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$3,470	3.5%
Interest Revenue	$0
Dividends	$12,362	12.3%
Sales of Assets	$84,464	84.2%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$13,159	81.2%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$428,774
Total Liabilities	$1
Net Assets	$428,773

Compensation

Key Employees and Officers	Compensation	Other
Stephen A Gellar Md (President)	$0	$0
Suzanne Nieburgs Md (Secretary General)	$0	$0
Aleck Hercburgs (Director)	$0	$0
Joseph Grimaldo (Director)	$0	$0

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990-PF

Filed on March 17, 2020

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending April
2018

Revenue

$25,401

Expenses

$43,821

Net Income

-$18,420

Net Assets

$344,683

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$7,800	30.7%
Interest Revenue	$0
Dividends	$5,085	20.0%
Sales of Assets	$12,516	49.3%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$43,727	99.8%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$344,683
Total Liabilities	$0
Net Assets	$344,683

Compensation

Key Employees and Officers	Compensation	Other
Stephen A Gellar Md (President)	$0	$0
Suzanne Nieburgs Md (Secretary General)	$0	$0
Aleck Hercburgs (Director)	$0	$0
Joseph Grimaldo (Director)	$0	$0

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990-PF

Filed on Oct. 5, 2018

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

XML

Fiscal Year Ending April
2017

Revenue

$14,903

Expenses

$29,119

Net Income

-$14,216

Net Assets

$363,103

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$7,012	47.1%
Interest Revenue	$0
Dividends	$3,355	22.5%
Sales of Assets	$4,536	30.4%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$28,997	99.6%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$363,103
Total Liabilities	$0
Net Assets	$363,103

Compensation

Key Employees and Officers	Compensation	Other
Stephen A Gellar Md (President)	$0	$0
Suzanne Nieburgs Md (Secretary General)	$0	$0
Aleck Hercburgs (Director)	$0	$0
Joseph Grimaldo (Director)	$0	$0

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990-PF

Filed on Nov. 6, 2017

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending April
2016

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

990-PF

Primary tax return for a private foundation's activities, finances, and governance

PDF

PDF (2 of 2)

Fiscal Year Ending April
2015

Revenue

$24,404

Expenses

$25,116

Net Income

-$712

Net Assets

$390,124

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$7,650	31.3%
Interest Revenue	$0
Dividends	$4,351	17.8%
Sales of Assets	$12,403	50.8%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$24,072	95.8%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$390,124
Total Liabilities	$0
Net Assets	$390,124

990-PF

Primary tax return for a private foundation's activities, finances, and governance

PDF

Fiscal Year Ending April
2014

Revenue

$18,683

Expenses

$27,336

Net Income

-$8,653

Net Assets

$390,836

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$5,688	30.4%
Interest Revenue	$0
Dividends	$12,995	69.6%
Sales of Assets	$0
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$25,965	95.0%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$390,836
Total Liabilities	$0
Net Assets	$390,836

990-PF

Primary tax return for a private foundation's activities, finances, and governance

PDF

Fiscal Year Ending April
2013

Revenue

$37,865

Expenses

$19,759

Net Income

$18,106

Net Assets

$399,491

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$7,235	19.1%
Interest Revenue	$0
Dividends	$7,820	20.7%
Sales of Assets	$22,810	60.2%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$18,362	92.9%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$399,491
Total Liabilities	$0
Net Assets	$399,491

990-PF

Primary tax return for a private foundation's activities, finances, and governance

PDF

Fiscal Year Ending April
2012

Revenue

$9,886

Expenses

$26,697

Net Income

-$16,811

Net Assets

$381,385

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$6,105	61.8%
Program Services	$0
Investment Income	$3,599	36.4%
Net Fundraising	$0
Sales of Assets	$182	1.8%
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$381,385
Total Liabilities	$0
Net Assets	$381,385

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending April
2011

Revenue

$20,893

Expenses

$21,266

Net Income

-$373

Net Assets

$398,560

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$5,860	28.0%
Program Services	$0
Investment Income	$7,125	34.1%
Net Fundraising	$0
Sales of Assets	$7,908	37.8%
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$398,560
Total Liabilities	$0
Net Assets	$398,560

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending April
2010

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

About This Data

What Is This Data?

Nonprofit Explorer includes summary data for nonprofit tax returns and full Form 990 documents, in both PDF and digital formats.

The summary data contains information processed by the IRS during the 2012-2019 calendar years; this generally consists of filings for the 2011-2018 fiscal years, but may include older records. This data release includes only a subset of what can be found in the full Form 990s.

In addition to the raw summary data, we link to PDFs and digital copies of full Form 990 documents wherever possible. This consists of separate releases by the IRS of Form 990 documents processed by the agency, which we update regularly.

We also link to copies of audits nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year since 2016. These audits are copied from the Federal Audit Clearinghouse.

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Every organization that has been recognized as tax exempt by the IRS has to file Form 990 every year, unless they make less than $200,000 in revenue and have less than $500,000 in assets, in which case they have to file form 990-EZ. Organizations making less than $50,000 don’t have to file either form but do have to let the IRS they’re still in business via a Form 990N "e-Postcard."

Nonprofit Explorer has organizations claiming tax exemption in each of the 27 subsections of the 501(c) section of the tax code, and which have filed a Form 990, Form 990EZ or Form 990PF. Taxable trusts and private foundations that are required to file a form 990PF are also included. Small organizations filing a Form 990N "e-Postcard" are not included in this data.

Types of Nonprofits

There are 27 nonprofit designations based on the numbered subsections of section 501(c) of the tax code. See the list »

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Raw filing data. Includes EINs and summary financials as structured data.
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Form 990 documents. Prior to 2017, these documents were obtained and processed by Public.Resource.org and ProPublica. Bulk PDF downloads since 2017 are available from the IRS.
Form 990 documents as XML files. Includes complete filing data (financial details, names of officers, tax schedules, etc.) in machine-readable format. Only available for electronically filed documents. Electronic data released prior to October 2021 is also available through Amazon Web Services.
Audits. PDFs of single or program-specific audits for nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year. Available for fiscal year 2015 and later.

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Updated January 26, 2026

International Society For Preventive Oncology Inc

Organization summary

Organization summary might be incomplete or out of date

Type of Nonprofit

Summary charts: organization finances over time

Revenue $69.6k (2025)

Expenses $393k (2025)

Total Assets $0 (2025)

Total Liabilities $0 (2025)

Tax Filings by Year

Fiscal Year Ending April 2025

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending April 2024

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending April 2023

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending April 2022

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending April 2021

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending April 2020

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending April 2019

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending April 2018

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending April 2017

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending April 2016

No Extracted Financial Data

Document Links

990-PF

Fiscal Year Ending April 2015

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Document Links

990-PF

Fiscal Year Ending April 2014

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Document Links

990-PF

Fiscal Year Ending April 2013

Extracted Financial Data

Revenue

$69.6k (2025)

Expenses

$393k (2025)

Total Assets

$0 (2025)

Total Liabilities

$0 (2025)

Fiscal Year Ending April
2025

Fiscal Year Ending April
2024

Fiscal Year Ending April
2023

Fiscal Year Ending April
2022

Fiscal Year Ending April
2021

Fiscal Year Ending April
2020

Fiscal Year Ending April
2019

Fiscal Year Ending April
2018

Fiscal Year Ending April
2017

Fiscal Year Ending April
2016

Fiscal Year Ending April
2015

Fiscal Year Ending April
2014

Fiscal Year Ending April
2013

Fiscal Year Ending April
2012

Fiscal Year Ending April
2011

Fiscal Year Ending April
2010

Fiscal Year Ending April
2009

Fiscal Year Ending April
2008

Fiscal Year Ending April
2007

Fiscal Year Ending April
2006

Fiscal Year Ending April
2005

Fiscal Year Ending April
2004

Fiscal Year Ending April
2003

Fiscal Year Ending April
2002

Fiscal Year Ending April
2001