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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 South Shore University Hospital Mark Claster

Mark Claster

OfficerTrustee/director

Vice Chair at South Shore University Hospital

Fiscal year ended December 31, 2024. Published on January 25, 2026.

$324,255
2024

Total compensation

Mark Claster has been listed as an employee of South Shore University Hospital in Form 990 filings since fiscal year 2021. Total compensation for Mark Claster has increased by 9.2% from 2021 to 2024.

Annual compensation details

$324,255
-0%
Vice Chair
2024
$325k related
2 hrs/wk
$324,306
+0.1%
Vice Chair
2023
$325k related
2 hrs/wk
$324,000
+9.1%
Former Chair
2022

Total compensation by year

Compare the compensation of Mark Claster to:

2024

Other employees at South Shore University Hospital

Michael Dowling
President and Chief Executive Officer
$5,943,362
$0 from org$5,867,706 from related$75,656 other
Mark Solazzo
Pres, Strategic Initiatives and
$3,816,311
$0 from org$3,747,876 from related$68,435 other
Robert Kalimi, M.D.
Cardiothoracic Surgeon
$2,301,202
$2,218,442 from orgNo related comp$82,760 other
Michael Nett, M.D.
Orthopedic Surgeon
$2,131,646
$2,046,324 from orgNo related comp$85,322 other
John Goncalves, M.D.
Cardiac Surgeon
$2,117,117
$2,031,795 from orgNo related comp$85,322 other
Harold Fernandez, M.D.
Cardiothoracic Surgeon
$2,080,083
$1,994,691 from orgNo related comp$85,392 other
Marcel Bas Aquilar, M.D.
Orthopedic Surgeon
$2,032,171
$1,946,779 from orgNo related comp$85,392 other
Michele Cusack
Executive Vice President and Chief Financial Officer
$1,990,193
$0 from org$1,904,871 from related$85,322 other
David Battinelli
Executive Vice President and Physician in Chief
$1,895,203
$0 from org$1,809,811 from related$85,392 other
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Revisions to this profile

January 25, 2026:
2024 South Shore University Hospital 990 published
January 25, 2026:
2022 South Shore University Hospital 990 published
January 25, 2026:
2023 South Shore University Hospital 990 published

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