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Parkinson Study Group Inc

Psg
  • Charlestown, MA
  • Tax-exempt since Dec. 2018
  • EIN: 46-5749468

Organization summary

Type of Nonprofit

Designated as a Organizations for any of the following purposes: religious, educational, charitable, scientific, literary, testing for public safety, fostering national or international amateur sports competition (as long as it doesn't provide athletic facilities or equipment), or the prevention of cruelty to children or animals.

Category: Diseases, Disorders, Medical Disciplines / Nerve, Muscle and Bone Diseases (NTEE)

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$966k (2024)

Expenses
$999k (2024)

Total Assets
$1.17M (2024)

Total Liabilities
$67.9k (2024)

Source: Form 990 tax filings from 2019 to 2024

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. If this organization filed an amended return, it may not be reflected below. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Form 990 data is from the IRS.

Fiscal Year Ending Sept.
2024

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$966,157
Expenses
$998,585
Net Income
-$32,428
Net Assets
$1,098,891
Notable Sources of Revenue Percent of Total Revenue
Contributions $356,478
36.9%
Program Services $609,679
63.1%
Investment Income $0
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $115,833
11.6%
Assets/Debt
Total Assets $1,166,834
Total Liabilities $67,943
Net Assets $1,098,891
Compensation
Key Employees and Officers Compensation Related Other
Joohi Jimenez Shahed (Co Chair) $0 $0 $0
Andrew Siderowf (Chair) $0 $0 $0
Cindy Casaceli (Board Member) $0 $0 $0
Eric Mac Klin (Board Member) $0 $0 $0
Sarah Sperling (Executive Director) $0 $0 $0
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Document Links

990
Filed on July 15, 2025

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

View Filing
XML

Fiscal Year Ending Sept.
2023

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$721,063
Expenses
$675,644
Net Income
$45,419
Net Assets
$1,131,319
Notable Sources of Revenue Percent of Total Revenue
Contributions $117,091
16.2%
Program Services $603,972
83.8%
Investment Income $0
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $95,000
14.1%
Assets/Debt
Total Assets $1,227,230
Total Liabilities $95,911
Net Assets $1,131,319
Compensation
Key Employees and Officers Compensation Related Other
Sarah Sperling (Executive Director) $89,317 $0 $7,766
Hubert Fernandez (Co Chair) $27,370 $0 $0
Michael Schwarzchild (Chair) $21,059 $0 $0
Andrew Siderowf (Board Member) $18,520 $0 $0
Tanya Simuni (Board Member) $7,000 $0 $0
Grace Bwala (Board Member) $5,750 $0 $0
Eric Mac Klin (Board Member) $0 $0 $0
Cindy Casaceli (Board Member) $0 $0 $0
Allison Willis (Board Member) $0 $0 $0
Joel Perlmutter (Board Member) $0 $0 $0
Joohi Jimenez Shahed (Board Member) $0 $0 $0
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Document Links

990
Filed on Dec. 19, 2024

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

View Filing
XML

Fiscal Year Ending Sept.
2022

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$898,835
Expenses
$480,686
Net Income
$418,149
Net Assets
$1,085,185
Notable Sources of Revenue Percent of Total Revenue
Contributions $52,389
5.8%
Program Services $846,446
94.2%
Investment Income $0
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $73,333
15.3%
Assets/Debt
Total Assets $1,102,918
Total Liabilities $17,733
Net Assets $1,085,185
Compensation
Key Employees and Officers Compensation Related Other
Sarah Sperling (Executive Director) $91,983 $0 $5,100
Eric Mac Klin (Board Member) $12,938 $0 $0
Michael Schwarzchild (Chair) $11,715 $0 $0
Hubert Fernandez (Co Chair) $7,807 $0 $0
Andrew Siderowf (Board Member) $4,983 $0 $0
Tanya Simuni (Board Member) $4,750 $0 $0
Allison Willis (Board Member) $3,000 $0 $0
Joohi Jimenez Shahed (Board Member) $0 $0 $0
Cindy Casaceli (Board Member) $0 $0 $0
Joel Perlmutter (Board Member) $0 $0 $0
Grace Bwala (Board Member) $0 $0 $0
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Document Links

990
Filed on Aug. 14, 2023

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

View Filing
PDF XML

Fiscal Year Ending Sept.
2021

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$380,022
Expenses
$389,635
Net Income
-$9,613
Net Assets
$667,488
Notable Sources of Revenue Percent of Total Revenue
Contributions $150
0.0%
Program Services $379,872
100.0%
Investment Income $0
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $690,115
Total Liabilities $22,627
Net Assets $667,488
Compensation
Key Employees and Officers Compensation Related Other
Hubert Fernandez (Co Chair) $8,100 $0 $0
David Simon (Board Member) $5,057 $0 $0
Peter Lewitt (Board Member) $3,000 $0 $0
Marie Saint Hilaire (Board Member) $3,000 $0 $0
Michael Schwarzchild (Chair) $3,000 $0 $0
Kelvin Chou (Board Member) $0 $0 $0
Karen Williams (Board Member) $0 $0 $0
Cindy Casaceli (Board Member) $0 $0 $0
Eric Macklin (Board Member) $0 $0 $0
Brad Racette (Board Member) $0 $0 $0
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Document Links

990
Filed on Jan. 30, 2023

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

View Filing
PDF XML
View Filing (2 of 2)

Fiscal Year Ending Sept.
2020

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$377,700
Expenses
$311,600
Net Income
$66,100
Net Assets
$317,952
Notable Sources of Revenue Percent of Total Revenue
Contributions $50
0.0%
Program Services $377,650
100.0%
Investment Income $0
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $560,068
Total Liabilities $242,116
Net Assets $317,952
Compensation
Key Employees and Officers Compensation Related Other
Hubert Fernandez (Co Chair) $11,500 $0 $0
David Simon (Board Member) $8,712 $0 $0
Michael Schwarzchild (Chair) $3,000 $0 $0
Cindy Casaceli (Board Member) $0 $0 $0
Eric Macklin (Board Member) $0 $0 $0
Brad Racette (Board Member) $0 $0 $0
Marie Saint Hilaire (Board Member) $0 $0 $0
Karen Williams (Board Member) $0 $0 $0
Peter Lewitt (Board Member) $0 $0 $0
Kelvin Chou (Board Member) $0 $0 $0
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Document Links

990
Filed on Aug. 14, 2021

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

View Filing
XML

Fiscal Year Ending Sept.
2019

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$224,943
Expenses
$467,924
Net Income
-$242,981
Net Assets
$307,019
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $224,943
100%
Investment Income $0
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $307,019
Total Liabilities $0
Net Assets $307,019
Compensation
Key Employees and Officers Compensation Related Other
Michael Schwarzchild (Chair) $0 $0 $0
Hubert Fernandez (Co Chair) $0 $0 $0
Cindy Casaceli (Board Member) $0 $0 $0
Kelvin Chou (Board Member) $0 $0 $0
Karen Williams (Board Member) $0 $0 $0
Marie Saint Hilaire (Board Member) $0 $0 $0
Eric Macklin (Board Member) $0 $0 $0
Peter Lewitt (Board Member) $0 $0 $0
David Simon (Board Member) $0 $0 $0
Brad Racette (Board Member) $0 $0 $0
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Document Links

990
Filed on Aug. 13, 2020

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

View Filing
PDF XML

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 information processed by the IRS during the 2012-2019 calendar years; this generally consists of filings for the 2011-2018 fiscal years, but may include 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 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?

Every organization that has been recognized as tax exempt by the IRS has to file 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 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."

Nonprofit Explorer has organizations claiming tax exemption in each of the 27 subsections of the 501(c) section of the tax code, and which have filed a Form 990, Form 990EZ or Form 990PF. Taxable trusts and private foundations that are required to file a form 990PF are also included. Small organizations filing a Form 990N "e-Postcard" are not included in this data.

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 EINs 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. Bulk PDF downloads since 2017 are available from the IRS.
  • 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.

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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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