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Compensation 990 is an independent service that uses public IRS Form 990 filings as its source data. We clean and standardize this information, but the original filings may contain errors or omissions. Years on this site refer to the organization’s fiscal year end date on the filing.

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Employees Mendota Community Hospital Thomas G Hammerton

Thomas G Hammerton

Officer

President OSF Healthcare Foundation and Chief Development Officer at Mendota Community Hospital

Fiscal year ended September 30, 2024. Published on January 25, 2026.

$742,547
2024

Total compensation

Thomas G Hammerton has been listed as an employee of Mendota Community Hospital in Form 990 filings since fiscal year 2017. Total compensation for Thomas G Hammerton has increased by 60.1% from 2017 to 2024.

Annual compensation details

$742,547
+55.1%
President OSF Healthcare Foundation and Chief Development Officer
2024
$616k
42 hrs/wk
$127k
--
$478,733
-25.9%
President OSF Healthcare Foundation Chief Development Officer
2023
$430k
42 hrs/wk
$50k
--
$646,284
+35.3%
President OSF Healthcare Foundation Chief Development Officer
2022
$605k
42 hrs/wk
$43k
--
$477,768
-14.9%
President OSF Healthcare Foundation Chief Development Officer
2021
$431k
43 hrs/wk
$48k
--
$561,721
+7.9%
President OSF Healthcare Foundation Chief Development Officer
2020
$496k
43 hrs/wk
$67k
--
$520,488
+27.2%
President OSF Healthcare Foundation Chief Development Officer
2019
$461k
43 hrs/wk
$61k
--
$409,050
-11.8%
President OSF Healthcare Foundation Chief Development Officer
2018
$363k
47 hrs/wk
$47k
--
$463,694
President OSF Healthcare Foundation Chief Development Officer
2017
$418k
47 hrs/wk
$46k
--

Total compensation by year

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Revisions to this profile

January 25, 2026:
2024 Mendota Community Hospital 990 published
January 25, 2026:
2023 Mendota Community Hospital 990 published
January 25, 2026:
2022 Mendota Community Hospital 990 published

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2024

Other employees at Mendota Community Hospital

Robert C Sehring
Vice Chairperson Chief Executive Officer
$3,064,020
$0 $2,987,377 $76,643
Michael A Cruz, M.D.
Chief Operating Officer
$1,425,652
$0 $1,349,009 $76,643
Michael M Allen
Chief Financial Officer
$1,376,047
$0 $1,205,633 $170,414
Michelle D Conger
Chief Strategy Officer, OSF Healthcare/ CEO, OSF Oncall Digital Health
$1,207,505
$0 $1,055,498 $152,007
Jeffry M Tillery
President, OSF Medical Group (Through April 2024)
$1,185,950
$0 $1,117,994 $67,956
Carol A Friesen
Chief Executive Officer, Eastern Region
$1,119,198
$0 $971,996 $147,202
James J Mormann
Chief Executive Officer, Integrated Solutions
$1,056,725
$0 $980,082 $76,643
Ralph Velazquez, M.D.
System Chief Medical Officer
$1,041,877
$0 $965,234 $76,643
Robert G Anderson
Chief Executive Officer, Central Region
$990,176
$0 $939,288 $50,888

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2024
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