Chicago Surgical Society

  • Des Plaines, IL
  • Tax exemption issued: June 1967
  • EIN: 36-6087445

Organization summary

Type of Nonprofit

Designated as a Business leagues, chambers of commerce, real estate boards, etc, created for the improvement of business conditions.

Donations to this organization are not tax deductible.

Tax Filings by Year

Form 990 is an information return that most organizations claiming federal tax-exempt status must file yearly with the IRS. Nonprofit Explorer has IRS digitized Form 990 data for filings processed in 2012 and later. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Organizations with gross receipts of less than $50,000 can file the form 990-N postcard filing, which doesn’t include financial details. All Form 990 data is from the IRS.

Fiscal Year Ending June
2026

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$49,659
Expenses
$48,086
Net Income
$1,573
Net Assets
$40,159
Notable Sources of Revenue Percent of Total Revenue
Contributions $32,322
65.1%
Program Services $0
Investment Income $7
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $11,086
22.3%
Assets/Debt
Total Assets $40,159
Total Liabilities $0
Net Assets $40,159
Compensation
Key Employees and Officers Compensation Other
Heidi Memmel (Secretary) $0 $0
Marc Mesleh (Treasurer) $0 $0
Nicole Siparsky (Recorder) $0 $0
Keith Millikan (Councilor) $0 $0
Jonathan Myers (Councilor) $0 $0
Konstantin Umanskiy (Councilor) $0 $0
Matthew Hyser (President) $0 $0
Peter Angelos (Vice President) $0 $0
Michael Ujiki (President-elect) $0 $0
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Document Links

990-EZ
Filed on Aug. 18, 2026

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
XML

Fiscal Year Ending June
2025

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$55,010
Expenses
$51,792
Net Income
$3,218
Net Assets
$38,586
Notable Sources of Revenue Percent of Total Revenue
Contributions $36,796
66.9%
Program Services $0
Investment Income $7
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $11,335
20.6%
Assets/Debt
Total Assets $38,586
Total Liabilities $0
Net Assets $38,586
Compensation
Key Employees and Officers Compensation Other
Heidi Memmel (Secretary) $0 $0
Marc Mesleh (Treasurer) $0 $0
Gerard Abood (Recorder) $0 $0
Keith Millikan (Councilor) $0 $0
Nora Hansen (Councilor) $0 $0
Jonathan Myers (Councilor) $0 $0
Konstantin Umanskiy (President) $0 $0
Matthew Hyser (President-elect) $0 $0
David Bentrem (Vice President) $0 $0
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990-EZ
Filed on Feb. 22, 2026

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending June
2024

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$47,124
Expenses
$39,062
Net Income
$8,062
Net Assets
$35,368
Notable Sources of Revenue Percent of Total Revenue
Contributions $26,537
56.3%
Program Services $0
Investment Income $7
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $11,793
25.0%
Assets/Debt
Total Assets $35,368
Total Liabilities $0
Net Assets $35,368
Compensation
Key Employees and Officers Compensation Other
Adam Kabaker (Secretary) $0 $0
Marc Mesleh (Treasurer) $0 $0
Gerard Abood (Recorder) $0 $0
Katherine Yao (Councilor) $0 $0
Keith Millikan (Councilor) $0 $0
Nora Hansen (Councilor) $0 $0
Kate Kopkash (Vice President) $0 $0
Jonathan Myers (President) $0 $0
Konstantin Umanskiy (President-elect) $0 $0
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990-EZ
Filed on Sept. 16, 2024

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending June
2023

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$37,310
Expenses
$49,179
Net Income
-$11,869
Net Assets
$27,306
Notable Sources of Revenue Percent of Total Revenue
Contributions $15,710
42.1%
Program Services $0
Investment Income $7
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $11,672
31.3%
Assets/Debt
Total Assets $27,306
Total Liabilities $0
Net Assets $27,306
Compensation
Key Employees and Officers Compensation Other
Adam Kabaker (Secretary) $0 $0
Sharfi Sarker (Treasurer) $0 $0
Margo Shoup (Councilor) $0 $0
Gerard Abood (Recorder) $0 $0
Katherine Yao (Councilor) $0 $0
Keith Millikan (Councilor) $0 $0
Nora Hansen (President) $0 $0
Michael Ujiki (Vice President) $0 $0
Jonathan Myers (President-elect) $0 $0
+ View more people

Document Links

990-EZ
Filed on Nov. 15, 2023

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending June
2022

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$45,771
Expenses
$48,684
Net Income
-$2,913
Net Assets
$39,175
Notable Sources of Revenue Percent of Total Revenue
Contributions $23,738
51.9%
Program Services $0
Investment Income $8
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $8,658
18.9%
Assets/Debt
Total Assets $39,175
Total Liabilities $0
Net Assets $39,175
Compensation
Key Employees and Officers Compensation Other
Adam Kabaker (Secretary) $0 $0
John Alverdy (Councilor) $0 $0
Sharfi Sarker (Treasurer) $0 $0
Margo Shoup (Councilor) $0 $0
Peter Angelos (Recorder) $0 $0
Katherine Yao (Councilor) $0 $0
Keith Millikan (President) $0 $0
Nora Hansen (President-elect) $0 $0
Mark Connolly (Vice President) $0 $0
+ View more people

Document Links

990-EZ
Filed on May 15, 2023

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending June
2021

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$39,239
Expenses
$19,864
Net Income
$19,375
Net Assets
$42,088
Notable Sources of Revenue Percent of Total Revenue
Contributions $17,942
45.7%
Program Services $0
Investment Income $9
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $42,088
Total Liabilities $0
Net Assets $42,088
Compensation
Key Employees and Officers Compensation Other
Jeffrey Wayne (Councilor) $0 $0
Michael Ujiki (Secretary) $0 $0
John Alverdy (Councilor) $0 $0
Sharfi Sarker (Treasurer) $0 $0
Margo Shoup (Councilor) $0 $0
Peter Angelos (Recorder & Membership Chair) $0 $0
David Bentrem (Program Chair) $0 $0
Katherine Yao (President) $0 $0
Keith Millikan (President-elect) $0 $0
Nora Hansen (Vice President) $0 $0
+ View more people

Document Links

990-EZ
Filed on Oct. 9, 2021

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
XML

Fiscal Year Ending June
2020

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$51,834
Expenses
$49,263
Net Income
$2,571
Net Assets
$22,713
Notable Sources of Revenue Percent of Total Revenue
Contributions $26,295
50.7%
Program Services $0
Investment Income $11
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $15,462
29.8%
Assets/Debt
Total Assets $22,713
Total Liabilities $0
Net Assets $22,713
Compensation
Key Employees and Officers Compensation Other
Loretto Glynn (Councilor) $0 $0
Jeffrey Wayne (Councilor) $0 $0
Michael Ujiki (Secretary) $0 $0
Ajay Maker (Vice President) $0 $0
John Alverdy (Councilor) $0 $0
Ted Saclarides (Treasurer) $0 $0
Margo Shoup (President Elect) $0 $0
Peter Angelos (Recorder) $0 $0
Kate Kopkash (Young Surgeons Chair) $0 $0
David Bentrem (Program Chair) $0 $0
Kathy Yao (President Elect) $0 $0
Sam Pappas (Membership Chair) $0 $0
+ View more people

Document Links

990-EZ
Filed on April 30, 2021

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending June
2019

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$49,672
Expenses
$54,993
Net Income
-$5,321
Net Assets
$20,142
Notable Sources of Revenue Percent of Total Revenue
Contributions $25,209
50.8%
Program Services $0
Investment Income $12
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $10,548
21.2%
Assets/Debt
Total Assets $20,142
Total Liabilities $0
Net Assets $20,142
Compensation
Key Employees and Officers Compensation Other
Mark Talamonti (Councilor) $0 $0
Loretto Glynn (Councilor) $0 $0
Jeffrey Wayne (Councilor) $0 $0
Michael Ujiki (Secretary) $0 $0
Ajay Maker (Recorder) $0 $0
John Alverdy (President) $0 $0
Konstantin Umanskiy (Vice President) $0 $0
Ted Saclarides (Treasurer) $0 $0
Margo Shoup (President Elect) $0 $0
Peter Angelos (Membership Chair) $0 $0
Raymon Grogan (Young Surgeons Chair) $0 $0
David Bentrem (Program Chair) $0 $0
+ View more people

Document Links

990-EZ
Filed on May 12, 2020

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending June
2018

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$61,375
Expenses
$62,311
Net Income
-$936
Net Assets
$25,463
Notable Sources of Revenue Percent of Total Revenue
Contributions $29,764
48.5%
Program Services $0
Investment Income $13
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $13,285
21.6%
Assets/Debt
Total Assets $25,463
Total Liabilities $0
Net Assets $25,463
Compensation
Key Employees and Officers Compensation Other
Mark Talamonti (Councilor) $0 $0
Loretto Glynn (Councilor) $0 $0
Jeffrey Wayne (President) $0 $0
Jeffrey Matthews (Councilor) $0 $0
Nora Hansen (Secretary) $0 $0
Ajay Maker (Recorder) $0 $0
John Alverdy (President-elect) $0 $0
Keith Millikan (Vice President) $0 $0
Ted Saclarides (Treasurer) $0 $0
+ View more people

Document Links

990-EZ
Filed on May 10, 2019

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending June
2017

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$70,293
Expenses
$71,024
Net Income
-$731
Net Assets
$26,399
Notable Sources of Revenue Percent of Total Revenue
Contributions $30,000
42.7%
Program Services $0
Investment Income $13
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $16,925
24.1%
Assets/Debt
Total Assets $26,399
Total Liabilities $0
Net Assets $26,399
Compensation
Key Employees and Officers Compensation Other
Jose Velasco (Councillor) $0 $0
Mark Talamonti (Councillor) $0 $0
Loretto Glynn (President) $0 $0
Jeffrey Wayne (President-elect) $0 $0
Jeffrey Matthews (Councillor) $0 $0
Adam Kabaker (Treasurer) $0 $0
Jonathan Myers (Vice President) $0 $0
Nora Hansen (Secretary) $0 $0
Ajay Maker (Recorder) $0 $0
+ View more people

Document Links

990-EZ
Filed on May 12, 2018

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending June
2016

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$70,902
Expenses
$76,492
Net Income
-$5,590
Net Assets
$27,130
Notable Sources of Revenue Percent of Total Revenue
Contributions $23,500
33.1%
Program Services $0
Investment Income $12
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $28,979
40.9%
Assets/Debt
Total Assets $27,130
Total Liabilities $0
Net Assets $27,130
Compensation
Key Employees and Officers Compensation Other
Allan Fredland (Councillor) $0 $0
Matthew Hyser (Vice President) $0 $0
Jose Velasco (Councillor) $0 $0
Mark Talamonti (President) $0 $0
Loretto Glynn (President-elect) $0 $0
Jeffrey Wayne (Recorder) $0 $0
Katharine Yao (Secretary) $0 $0
Jeffrey Matthews (Councillor) $0 $0
Adam Kabaker (Treasurer) $0 $0
+ View more people

Document Links

990-EZ
Filed on Nov. 28, 2016

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML
PDF (2 of 2)

Fiscal Year Ending June
2015

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$54,719
Expenses
$57,354
Net Income
-$2,635
Net Assets
$32,720
Notable Sources of Revenue Percent of Total Revenue
Contributions $18,000
32.9%
Program Services $0
Investment Income $25
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $19,394
35.4%
Assets/Debt
Total Assets $32,720
Total Liabilities $0
Net Assets $32,720
Compensation
Key Employees and Officers Compensation Other
Steven Dejong (Councillor) $0 $0
Allan Fredland (Councillor) $0 $0
Lawrence Krause (Vice President) $0 $0
Jose Velasco (President) $0 $0
Mark Talamonti (President-elect) $0 $0
Jeffrey Wayne (Recorder) $0 $0
Katharine Yao (Secretary) $0 $0
Jonathan Myers (Treasurer) $0 $0
+ View more people

Document Links

990-EZ
Filed on May 9, 2016

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending June
2014

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$60,854
Expenses
$56,406
Net Income
$4,448
Net Assets
$35,355
Notable Sources of Revenue Percent of Total Revenue
Contributions $14,500
23.8%
Program Services $0
Investment Income $31
0.1%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $19,413
31.9%
Assets/Debt
Total Assets $35,355
Total Liabilities $0
Net Assets $35,355

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending June
2013

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$59,045
Expenses
$60,907
Net Income
-$1,862
Net Assets
$30,907
Notable Sources of Revenue Percent of Total Revenue
Contributions $11,000
18.6%
Program Services $0
Investment Income $29
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $22,746
38.5%
Assets/Debt
Total Assets $30,907
Total Liabilities $0
Net Assets $30,907

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending June
2012

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$56,120
Expenses
$57,887
Net Income
-$1,767
Net Assets
$32,769
Notable Sources of Revenue Percent of Total Revenue
Contributions $3,000
5.3%
Program Services $0
Investment Income $39
0.1%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $22,656
40.4%
Assets/Debt
Total Assets $32,769
Total Liabilities $0
Net Assets $32,769

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending June
2011

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$58,364
Expenses
$67,931
Net Income
-$9,567
Net Assets
$34,536
Notable Sources of Revenue Percent of Total Revenue
Contributions $7,000
12.0%
Program Services $0
Investment Income $60
0.1%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $19,679
33.7%
Assets/Debt
Total Assets $34,536
Total Liabilities $0
Net Assets $34,536

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending June
2010

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending June
2009

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending June
2008

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending June
2007

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending June
2006

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending June
2005

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

About This Data

What Is This Data?

Nonprofit Explorer includes summary data for nonprofit tax returns and full Form 990 documents, in both PDF and digital formats.

The summary data contains financial information from tax returns processed by the IRS since the 2012 calendar years, as well as data extracted from digital filings. IRS summary data also includes limited older records. This data release includes only a subset of what can be found in the full Form 990s.

In addition to the raw summary data, we link to PDFs and digital copies of full Form 990 documents wherever possible. This consists of separate releases by the IRS of Form 990 documents processed by the agency, which we update regularly.

We also link to copies of audits for nonprofit organizations that spent $750,000 or more in federal grant money in a single fiscal year since 2016. These audits are copied from the Federal Audit Clearinghouse.

Which Organizations Are Here?

Most organizations that have been recognized as tax exempt by the IRS have to file the Form 990 every year, unless they make less than $200,000 in revenue and have less than $500,000 in assets, in which case they have to file the Form 990-EZ. Organizations making less than $50,000 don’t have to file either form but do have to let the IRS they’re still in business via a Form 990N "e-Postcard," which does not contain financial details. Churches are not required to file Form 990.

Nonprofit Explorer has organizations that are claiming tax exemption in any of the 27 subsections of the 501(c) section of the tax code. Taxable trusts and private foundations that are required to file a form 990PF are also included.

Types of Nonprofits

There are 27 nonprofit designations based on the numbered subsections of section 501(c) of the tax code. See the list »

Get the Data

For those interested in acquiring the original data from the source, here’s where our data comes from:

  • Raw filing data. Includes Employer Identification Numbers and summary financials as structured data.
  • Exempt Organization profiles. Includes organization names, addresses, etc. You can merge this with the raw filing data using EIN numbers.
  • Form 990 documents. Prior to 2017, these documents were obtained and processed by Public.Resource.org and ProPublica.
  • Form 990 documents as XML files. Includes complete filing data (financial details, names of officers, tax schedules, etc.) in machine-readable format. Only available for electronically filed documents. Electronic data released prior to October 2021 is also available through Amazon Web Services.
  • Audits. PDFs of single or program-specific audits for nonprofit organizations that spent $750,000 or more in federal grant money in a single fiscal year. Available for fiscal year 2015 and later.

API

The data powering this website is available programmatically, via an API. Read the API documentation »

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About Nonprofit Explorer

Nonprofit Explorer

Browse millions of annual returns filed by tax-exempt organizations with ProPublica’s Nonprofit Explorer. See details like executive compensation, revenue, expenses and more. Search for an organization or a person, or search the full text of filings.

By Andrea Suozzo, Alec Glassford, Ash Ngu and Brandon Roberts.

Design by Jeff Frankl. Additional development by Ken Schwencke, Mike Tigas, and Sisi Wei.

E-file viewer adapted from IRS e-File Viewer by Ben Getson. Code for scraping audit documents adapated from Govwiki.

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