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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 Osf Healthcare System Mark A Nafziger

Mark A Nafziger

Highest compensated employee

Chief Executive Officer Ambulatory Care (Through MAR 2020) at Osf Healthcare System

Fiscal year ended September 30, 2021. Published on January 25, 2026.

$1,021,373
2021

Total compensation

Mark A Nafziger has been listed as an employee of Osf Healthcare System in Form 990 filings since fiscal year 2019. Total compensation for Mark A Nafziger has increased by 29.3% from 2019 to 2021.

Annual compensation details

$1,021,373
+30.4%
Chief Executive Officer Ambulatory Care (Through MAR 2020)
2021
$1M org
40 hrs/wk
$12k other
--
$782,969
-0.9%
Chief Ambulatory Care (Through MAR 2020)
2020
$753k org
40 hrs/wk
$31k other
--

Total compensation by year

Compare the compensation of Mark A Nafziger to:

2021

Other employees at Osf Healthcare System

Robert C Sehring
Vice Chairperson Chief Executive Officer
$1,989,228
$1,944,604 from orgNo related comp$44,624 other
John P Hanlon
President of OSF Little Company
$1,406,392
$1,393,542 from orgNo related comp$12,850 other
James L McGee, M.D.
Physician
$1,007,608
$974,916 from orgNo related comp$32,692 other
Iftekhar U Ahmad, M.D.
Physician
$1,002,244
$952,986 from orgNo related comp$49,258 other
Shylendra B Sreenivasappa
Oncologist
$928,555
$884,594 from orgNo related comp$43,961 other
Stephen E Hippler, M.D.
Chief Clinical Officer
$884,404
$835,513 from orgNo related comp$48,891 other
Michael A Cruz, M.D.
Chief Operating Officer
$869,838
$820,480 from orgNo related comp$49,358 other
Michael M Allen
Chief Financial Officer
$822,925
$775,229 from orgNo related comp$47,696 other
James J Mormann
Chief Information Officer
$772,724
$724,943 from orgNo related comp$47,781 other
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Revisions to this profile

January 25, 2026:
2021 Osf Healthcare System 990 published
January 24, 2026:
2020 Osf Healthcare System 990 published
January 24, 2026:
2019 Osf Healthcare System 990 published

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$790,197
CEO Ambulatory Care
2019
$758k org
40 hrs/wk
$33k other
--

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2021
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