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American Heartworm Society Inc

Organization summary

Type of Nonprofit

Designated as a 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.

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$733k (2023)

Expenses
$436k (2023)

Total Assets
$1.14M (2023)

Total Liabilities
$6.41k (2023)

Source: Form 990 tax filings from 2011 to 2023

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 Dec.
2023

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$733,243
Expenses
$436,152
Net Income
$297,091
Net Assets
$1,130,865
Notable Sources of Revenue Percent of Total Revenue
Contributions $523,167
71.3%
Program Services $199,014
27.1%
Investment Income $11,062
1.5%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,137,271
Total Liabilities $6,406
Net Assets $1,130,865
Compensation
Key Employees and Officers Compensation Related Other
Dr Mark Cousins (Board Member) $0 $0 $0
Dr Blue Brawner (Board Member) $0 $0 $0
Dr Elizabeth Clyde (Board Member) $0 $0 $0
Dr Marisa Ames (Board Member) $0 $0 $0
Dr Aliya Magee (Board Member) $0 $0 $0
Dr Uri Donnett (Board Member) $0 $0 $0
Dr Chris Adolph (Vice President) $0 $0 $0
Dr Tom Nelson (Research Chair) $0 $0 $0
Dr Andy Moorehead (Symposium Program Chair) $0 $0 $0
Dr Angele Bice (Secretarytreasurer) $0 $0 $0
Dr Jenni Rizzo (President) $0 $0 $0
Dr Chris Duke (Past President) $0 $0 $0
Dr Lindsay Starkey (Editor) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2022

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$755,708
Expenses
$1,024,934
Net Income
-$269,226
Net Assets
$821,274
Notable Sources of Revenue Percent of Total Revenue
Contributions $484,030
64.0%
Program Services $265,786
35.2%
Investment Income $5,892
0.8%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $825,162
Total Liabilities $3,888
Net Assets $821,274
Compensation
Key Employees and Officers Compensation Related Other
Dr Mark Cousins (Board Member) $0 $0 $0
Dr Blue Brawner (Board Member) $0 $0 $0
Dr Elizabeth Clyde (Board Member) $0 $0 $0
Dr Marisa Ames (Board Member) $0 $0 $0
Dr Aliya Magee (Board Member) $0 $0 $0
Dr Uri Donnett (Board Member) $0 $0 $0
Dr Chris Adolph (Vice President) $0 $0 $0
Dr Tom Nelson (Research Chair) $0 $0 $0
Dr Andy Moorehead (Symposium Program Chair) $0 $0 $0
Dr Angela Bice (Secretarytreasurer) $0 $0 $0
Dr Jenni Rizzo (President) $0 $0 $0
Dr Chris Duke (Past President) $0 $0 $0
Dr Lindsay Starkey (Editor) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$633,346
Expenses
$808,736
Net Income
-$175,390
Net Assets
$1,090,500
Notable Sources of Revenue Percent of Total Revenue
Contributions $610,541
96.4%
Program Services $18,063
2.9%
Investment Income $4,742
0.7%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,092,551
Total Liabilities $2,051
Net Assets $1,090,500
Compensation
Key Employees and Officers Compensation Related Other
Dr Marisa Ames (Board Member) $0 $0 $0
Drangela Bice (Board Member) $0 $0 $0
Dr Andy Moorehead (Board Member) $0 $0 $0
Dr Jenni Rizzo (Board Member) $0 $0 $0
Dr Lindsay Starkey (Board Member) $0 $0 $0
Dr Bianca Zaffaran (Board Member) $0 $0 $0
Dr Doug Carithers (Vice Preside) $0 $0 $0
Dr Elizabeth Clyde (Secretary/Tr) $0 $0 $0
Dr Brian Digangi (Editor) $0 $0 $0
Dr Chris Duke (President) $0 $0 $0
Dr Tom Nelson (Research Cha) $0 $0 $0
Dr Chris Rehm (Past Preside) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2020

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$627,666
Expenses
$568,562
Net Income
$59,104
Net Assets
$1,265,890
Notable Sources of Revenue Percent of Total Revenue
Contributions $603,527
96.2%
Program Services $15,490
2.5%
Investment Income $7,492
1.2%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $1,157
0.2%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,266,224
Total Liabilities $334
Net Assets $1,265,890
Compensation
Key Employees and Officers Compensation Related Other
Dr Marisa Ames (Board Member) $0 $0 $0
Drangela Bice (Board Member) $0 $0 $0
Dr Andy Moorehead (Board Member) $0 $0 $0
Dr Jenni Rizzo (Board Member) $0 $0 $0
Dr Lindsay Starkey (Board Member) $0 $0 $0
Dr Bianca Zaffaran (Board Member) $0 $0 $0
Dr Doug Carithers (Vice Preside) $0 $0 $0
Dr Elizabeth Clyde (Secretary/Tr) $0 $0 $0
Dr Brian Digangi (Editor) $0 $0 $0
Dr Chris Duke (President) $0 $0 $0
Dr Tom Nelson (Research Cha) $0 $0 $0
Dr Chris Rehm (Past Preside) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2019

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$745,270
Expenses
$936,137
Net Income
-$190,867
Net Assets
$1,206,786
Notable Sources of Revenue Percent of Total Revenue
Contributions $466,339
62.6%
Program Services $262,542
35.2%
Investment Income $13,573
1.8%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $2,816
0.4%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,207,066
Total Liabilities $280
Net Assets $1,206,786
Compensation
Key Employees and Officers Compensation Related Other
Dr Chris Duke (President) $0 $0 $0
Dr Chris Rehm (Past President) $0 $0 $0
Dr Doug Carithers (Vice President) $0 $0 $0
Dr Elizabethh Clyde (Secretary/Treasurer) $0 $0 $0
Dr Brian Digangi (Editor) $0 $0 $0
Dr Tom Nelson (Research Chair) $0 $0 $0
Dr Marisa Ames (Board Member) $0 $0 $0
Dr Angela Bice (Board Member) $0 $0 $0
Dr Andy Moorhead (Board Member) $0 $0 $0
Dr Jenni Rizzo (Board Member) $0 $0 $0
Dr Lindsay Starkey (Board Member) $0 $0 $0
Dr Bianca Zaffarano (Board Member) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2018

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$684,930
Expenses
$430,782
Net Income
$254,148
Net Assets
$1,397,653
Notable Sources of Revenue Percent of Total Revenue
Contributions $653,857
95.5%
Program Services $15,415
2.3%
Investment Income $7,655
1.1%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $8,003
1.2%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,398,273
Total Liabilities $620
Net Assets $1,397,653
Compensation
Key Employees and Officers Compensation Related Other
Dr Elizabeth Clyde (Board Member) $0 $0 $0
Dr Brian Digangi (Board Member) $0 $0 $0
Dr Chris Duke (Board Member) $0 $0 $0
Dr Andy Moorhead (Board Member) $0 $0 $0
Dr Tom Nelson (Board Member) $0 $0 $0
Dr Jenni Rizzo (Board Member) $0 $0 $0
Dr Chris Rehm (President) $0 $0 $0
Dr Stephen Jones (Past Preside) $0 $0 $0
Dr Tony Rumschlag (Vice Preside) $0 $0 $0
Dr Bianca Zaffarano (Secretary/ T) $0 $0 $0
Dr Patricia Payne (Editor) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2017

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$614,822
Expenses
$586,637
Net Income
$28,185
Net Assets
$1,143,505
Notable Sources of Revenue Percent of Total Revenue
Contributions $581,793
94.6%
Program Services $22,256
3.6%
Investment Income $7,206
1.2%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $3,567
0.6%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,144,125
Total Liabilities $620
Net Assets $1,143,505
Compensation
Key Employees and Officers Compensation Related Other
Dr Elizabeth Clyde (Board Member) $0 $0 $0
Dr Brian Digangi (Board Member) $0 $0 $0
Dr Chris Duke (Board Member) $0 $0 $0
Dr Andy Moorhead (Board Member) $0 $0 $0
Dr Tom Nelson (Board Member) $0 $0 $0
Dr Jenni Rizzo (Board Member) $0 $0 $0
Dr Chris Rehm (President) $0 $0 $0
Dr Tony Rumschlag (Vice Preside) $0 $0 $0
Dr Bianca Zaffarano (Secretary/ T) $0 $0 $0
Dr Patricia Payne (Editor) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2016

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$918,430
Expenses
$1,149,446
Net Income
-$231,016
Net Assets
$1,115,320
Notable Sources of Revenue Percent of Total Revenue
Contributions $700,592
76.3%
Program Services $208,419
22.7%
Investment Income $6,748
0.7%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $2,671
0.3%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,115,917
Total Liabilities $597
Net Assets $1,115,320
Compensation
Key Employees and Officers Compensation Related Other
Dr Elizabeth Clyde (Board Member) $0 $0 $0
Dr Brian Digangi (Board Member) $0 $0 $0
Dr Chris Duke (Board Member) $0 $0 $0
Dr Andy Moorhead (Board Member) $0 $0 $0
Dr Tom Nelson (Board Member) $0 $0 $0
Dr Jenni Rizzo (Board Member) $0 $0 $0
Dr Chris Rehm (President) $0 $0 $0
Dr Stephen Jones (Past Preside) $0 $0 $0
Dr Tony Rumschlag (Vice Preside) $0 $0 $0
Dr Bianca Zaffarano (Secretary/ T) $0 $0 $0
Dr Patricia Payne (Editor) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2015

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$646,577
Expenses
$540,367
Net Income
$106,210
Net Assets
$1,346,336
Notable Sources of Revenue Percent of Total Revenue
Contributions $614,514
95.0%
Program Services $15,711
2.4%
Investment Income $6,191
1.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $10,161
1.6%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,346,586
Total Liabilities $250
Net Assets $1,346,336
Compensation
Key Employees and Officers Compensation Related Other
Dr Elizabeth Clyde (Board Member) $0 $0 $0
Dr Martha Smith Blackmore (Board Member) $0 $0 $0
Dr Matthew Miller (Chair, Progr) $0 $0 $0
Dr Bianca Zaffarano (Board Member) $0 $0 $0
Dr Patricia Payne (Board Member) $0 $0 $0
Dr Chris Rehm (Board Member) $0 $0 $0
Dr Tom Nelson (Board Member) $0 $0 $0
Dr Doug Carithers (Editor) $0 $0 $0
Dr Mike Loenser (Vice Preside) $0 $0 $0
Dr Stephen Jones (President) $0 $0 $0
Dr Wallace Graham (Past Preside) $0 $0 $0
Dr Robert Stannard (Secretary/Tr) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$725,293
Expenses
$664,697
Net Income
$60,596
Net Assets
$1,240,126
Notable Sources of Revenue Percent of Total Revenue
Contributions $647,991
89.3%
Program Services $57,931
8.0%
Investment Income $6,168
0.9%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $13,203
1.8%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,238,915
Total Liabilities -$1,211
Net Assets $1,240,126
Compensation
Key Employees and Officers Compensation Related Other
Dr Cristiano Von Simson (Vice President) $0 $0 $0
Dr Elizabeth Clyde (Board Member) $0 $0 $0
Dr Stephen Jones (President) $0 $0 $0
Dr Wallace Graham (Past President) $0 $0 $0
Dr Martha Smith Blackmore (Board Member) $0 $0 $0
Dr Matthew Miller (Chair, Prog Com) $0 $0 $0
Dr Bianca Zaffarano (Board Member) $0 $0 $0
Dr Patricia Payne (Board Member) $0 $0 $0
Dr Chris Rehm (Board Member) $0 $0 $0
Dr Robert Stannard (Secretary/Treas) $0 $0 $0
Dr Tom Nelson (Board Member) $0 $0 $0
Dr Doug Carithers (Editor) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2013

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$994,817
Expenses
$794,812
Net Income
$200,005
Net Assets
$1,179,530
Notable Sources of Revenue Percent of Total Revenue
Contributions $838,100
84.2%
Program Services $134,880
13.6%
Investment Income $6,689
0.7%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $15,148
1.5%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,179,530
Total Liabilities $0
Net Assets $1,179,530
Compensation
Key Employees and Officers Compensation Related Other
Dr Cristiano Von Simson (Vice President) $0 $0 $0
Dr Elizabeth Clyde (Board Member) $0 $0 $0
Dr Stephen Jones (President) $0 $0 $0
Dr Wallace Graham (Vice President) $0 $0 $0
Dr Martha Smith Blackmore (Board Member) $0 $0 $0
Dr Matthew Miller (Chairman) $0 $0 $0
Dr Bianca Zaffarano (Board Member) $0 $0 $0
Dr Patricia Payne (Board Member) $0 $0 $0
Dr Chris Rehm (Board Member) $0 $0 $0
Dr Robert Stannard (Secretary/Treas) $0 $0 $0
Dr Tom Nelson (Board Member) $0 $0 $0
Dr Doug Carithers (Editor) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2012

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$466,191
Expenses
$360,474
Net Income
$105,717
Net Assets
$979,525
Notable Sources of Revenue Percent of Total Revenue
Contributions $437,606
93.9%
Program Services $10,242
2.2%
Investment Income $7,191
1.5%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $11,152
2.4%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $979,525
Total Liabilities $0
Net Assets $979,525

Document Links

Fiscal Year Ending Dec.
2011

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$604,201
Expenses
$330,062
Net Income
$274,139
Net Assets
$873,808
Notable Sources of Revenue Percent of Total Revenue
Contributions $587,218
97.2%
Program Services $9,218
1.5%
Investment Income $2,429
0.4%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $5,336
0.9%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $873,808
Total Liabilities $0
Net Assets $873,808

Document Links

Fiscal Year Ending Dec.
2010

No Extracted Financial Data

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

Document Links

Fiscal Year Ending Dec.
2009

No Extracted Financial Data

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

Document Links

Fiscal Year Ending Dec.
2008

No Extracted Financial Data

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

Document Links

Fiscal Year Ending Dec.
2007

No Extracted Financial Data

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

Document Links

Fiscal Year Ending Dec.
2006

No Extracted Financial Data

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

Document Links

Fiscal Year Ending Dec.
2005

No Extracted Financial Data

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

Document Links

Fiscal Year Ending Dec.
2003

No Extracted Financial Data

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

Document Links

Fiscal Year Ending Dec.
2002

No Extracted Financial Data

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

Document Links

Fiscal Year Ending Dec.
2001

No Extracted Financial Data

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

Document Links

About 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.

Which Organizations Are Here?

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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For those interested in acquiring the original data from the source, here’s where our data comes from:

  • Raw filing data. Includes EINs and summary financials as structured data.
  • Exempt Organization profiles. Includes organization names, addresses, etc. You can merge this with the raw filing data using EIN numbers.
  • 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.
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  • 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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