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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 Southern Illinois Medical Services NFP Mack McCain, M.D.

Mack McCain, M.D.

Highest compensated employee

Physician at Southern Illinois Medical Services NFP

Fiscal year ended March 31, 2023. Published on January 25, 2026.

$1,467,387
2023

Total compensation

Mack McCain, M.D. has been listed as an employee of Southern Illinois Medical Services NFP in Form 990 filings since fiscal year 2017. Total compensation for Mack McCain, M.D. has increased by 61.3% from 2017 to 2023.

Annual compensation details

$1,467,387
+42.7%
Physician
2023
$1.4M org
40 hrs/wk
$41k other
--
$1,028,137
-16.6%
Physician
2022
$981k org
40 hrs/wk
$48k other
--

Total compensation by year

Compare the compensation of Mack McCain, M.D. to:

2023

Other employees at Southern Illinois Medical Services NFP

Lukasz Dabrowski, M.D.
Physician
$2,450,031
$2,383,614 from orgNo related comp$66,417 other
Gerson Criste, M.D.
Physician
$1,397,458
$1,319,223 from orgNo related comp$78,235 other
Nader Dababneh, M.D.
Physician
$1,348,742
$1,270,795 from orgNo related comp$77,947 other
Gowda Sharath
Physician
$1,214,397
$1,163,610 from orgNo related comp$50,787 other
Rex Budde
President/Ceo (Partial Year)
$1,132,889
$0 from org$1,088,874 from related$44,015 other
Marci L Moore-Connelley, M.D.
SR Vp/Cmo
$670,405
$0 from org$578,625 from related$91,780 other
Warren Ladner
Sr Vp/Cfo/Treasurer
$585,238
$0 from org$530,314 from related$54,924 other
Todd Guenzburger
Vp/Chief Health Info Officer
$549,086
$0 from org$465,522 from related$83,564 other
Daniel Skiles
Vp/Health Transformation
$510,576
$0 from org$423,469 from related$87,107 other
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Revisions to this profile

January 25, 2026:
2023 Southern Illinois Medical Services NFP 990 published
January 25, 2026:
2022 Southern Illinois Medical Services NFP 990 published
January 24, 2026:
2021 Southern Illinois Medical Services NFP 990 published

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$1,232,625
+24.6%
Physician
2021
$1.2M org
40 hrs/wk
$81k other
--
$989,541
+9.8%
Physician
2020
$938k org
40 hrs/wk
$53k other
--
$901,277
-6.1%
Physician
2019
$823k org
40 hrs/wk
$79k other
--
$960,090
+5.5%
Physician
2018
$885k org
40 hrs/wk
$76k other
--
$909,975
Physician
2017
$835k org
40 hrs/wk
$76k other
--