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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 Tufts Medical Center Physicians Organization Inc. Charles Cassidy, M.D.

Charles Cassidy, M.D.

Trustee/director

Director (Until 9/24) at Tufts Medical Center Physicians Organization Inc.

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

$1,145,883
2024

Total compensation

Charles Cassidy, M.D. has been listed as an employee of Tufts Medical Center Physicians Organization Inc. in Form 990 filings since at least fiscal year 2016. Total compensation for Charles Cassidy, M.D. has increased by 0.3% from 2016 to 2024.

Annual compensation details

$1,145,883
+4.1%
Director (Until 9/24)
2024
$1.1M related
38 hrs/wk
$58k other
--
$1,100,644
-5.2%
Director
2023
$1M related
38 hrs/wk
$55k other
--

Total compensation by year

Compare the compensation of Charles Cassidy, M.D. to:

2024

Other employees at Tufts Medical Center Physicians Organization Inc.

Michael Tarnoff, M.D.
Director (Part-Year)
$1,390,602
$0 from org$1,193,833 from related$196,769 other
Phil Okala
Director
$1,137,502
$0 from org$1,121,244 from related$16,258 other
Susan Green
Director
$1,085,892
$0 from org$1,047,084 from related$38,808 other
Erika Werner, M.D.
President and Chief Executive Officer
$724,834
$0 from org$690,427 from related$34,407 other
Zachary Redmond
Secretary and Clerk
$669,412
$0 from org$599,263 from related$70,149 other
Karen Freund, M.D.
Director
$652,575
$0 from org$594,888 from related$57,687 other
Emily Young
Director
$636,096
$0 from org$535,546 from related$100,550 other
Carey Kimmelstiel, M.D.
Director
$596,849
$0 from org$539,703 from related$57,146 other
Assad Siddiqi
Treasurer/Cfo (Until 7/24)
$507,712
$0 from org$439,812 from related$67,900 other
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Revisions to this profile

January 25, 2026:
2024 Tufts Medical Center Physicians Organization Inc. 990 published
January 25, 2026:
2023 Tufts Medical Center Physicians Organization Inc. 990 published
January 25, 2026:
2022 Tufts Medical Center Physicians Organization Inc. 990 published

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$1,160,640
+11.5%
Director
2022
$1.1M related
38 hrs/wk
$52k other
--
$1,040,678
-9.3%
Director
2021
$1M related
38 hrs/wk
$40k other
--
$1,146,940
-1.1%
Director
2020
$1.1M related
38 hrs/wk
$51k other
--
$1,159,525
+0.6%
Director
2019
$1.1M related
38 hrs/wk
$49k other
--
$1,153,075
+4.2%
Director
2018
$1.1M related
38 hrs/wk
$49k other
--
$1,106,503
-3.1%
Director
2017
$1M related
38 hrs/wk
$60k other
--
$1,142,073
Director
2016
$1.1M related
38 hrs/wk
$58k other
--

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2024
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