R.J. McMahon, Chief Executive Officer at Oak Leyden Developmental Services | Linkedin
R.J. McMahon, Chief Executive Officer at Oak Leyden Developmental Services | Linkedin
The listed appropriations included grants of $400,000 and $90,000 if two, each designated for programs or services funded by the State of Illinois.
These appropriations represent state-level funding authorized by lawmakers, reflecting what was approved in the budget, not necessarily disbursed. The funds cover only State of Illinois support and exclude federal, local, or other public sources.
Founded in 1956, Oak Leyden Developmental Services states that its mission is: “Oak Leyden serves children and adults with intellectual and developmental disabilities and delays and their families by providing individualized therapy, education, housing, job placement, and comprehensive services.”
You can learn more about the organization at its website.
In its most recent IRS Form 990 filing filing for tax year 2024, the organization reported $7,497,640 in total revenue. Of that, $591,527 came from government grants including federal, state, or local sources, making up 7.9% of total revenue.
The nonprofit listed $969,698 in contributions overall. It also reported $342,266 categorized under other contributions, which may include restricted donations, pledges, or bequests.
At the beginning of 2024, Oak Leyden Developmental Services had $4,905,850 in assets. By the end of 2024, that figure had changed to $4,785,980, indicating a 2.4% decline in overall holdings.
According to its filing, public funding remained fairly steady year-over-year, changing from $573,423 in 2023 to $591,527 in 2024 (a difference of 3.2%).
However, a Chicago City Wire analysis found that IRS filings frequently contain discrepancies when compared with publicly disclosed government grant reports and budgets.
Oak Leyden Developmental Services is one of hundreds of nonprofits across Illinois that receive substantial support from state taxpayers while also fundraising privately.
In 2025, Illinois lawmakers introduced House Bill 1266, also known as the Department of Government Efficiency (DOGE) Act. The proposal would create a new oversight body within the Office of the Auditor General tasked with identifying cost-saving measures, reviewing agency performance, and advising on audit priorities. If passed, DOGE could bring additional scrutiny and performance evaluation to taxpayer-funded organizations.
According to ProPublica, Illinois has more than 78,000 active tax-exempt organizations, including nearly 60,000 classified as charitable nonprofits. In their most recent IRS filings, these groups reported a combined revenue exceeding $156 billion.
| Fiscal Year | Total Grants/Contracts | Total Taxpayer $$ |
|---|---|---|
| 2024 | 2 | $490,000 |
| Term | Name | Title |
|---|---|---|
| 2024-2024 | Rj Mcmahon | Chief Executive Officer |
| Year | Name | Title | Compensation |
|---|---|---|---|
| 2024 | Christopher M Nakatsuka | Oak Leyden | - |
| 2024 | Deloise K Pritchett | Dsp | - |
| 2024 | Mechelle Washington | Executive Sec | - |
| 2024 | Megan M Mcdermott | Qualified Intellectual Disability Profesisonal | - |
| 2024 | Sheena M A Zollicoffer | Clinic Support Staff | - |
| 2024 | William N Holmes | Dsp | - |
| 2024 | Yolanda Diane Goff | Training Counselor | - |
| 2019 | Sandra A Vanoskey | Director Of Residential And Clinic Operations | - |
| 2017 | Abigail Porcayo | Early Intervention Volunteer | - |
| 2017 | Ryan G Wolf | Development And Marketing Associate | - |
| 2016 | Chauntesse Lewis | - | |
| 2016 | Hunter Ulysses Cox | Day Program Qidp | - |
| 2016 | Kelly Ann Kreutzer | Qidp | - |
| 2016 | Laura J Moreci | Children's Services Program Assistant | - |
| 2015 | Dion Harold-Carnell Banister | Life Skills Instructor | - |
| 2015 | Jennifer A Zosel | Qualified Intellectual Disability Professional | - |
| 2015 | Rachel Amanda Holowicki | Developmental Therapy Intern | - |
| 2014 | Erick Gardner | - | |
| 2013 | Alicia B Plomin-Spitler | Graphic Designer Marketing Assistant | - |
| 2011 | Jamal Jarrett | - | |
| 2010 | Valerie A Sheldon | Director Of Development | - |
| 2009 | Albert Benedict | Board Of Directors | - |
| 2009 | Christine Diane Sheldon | Graphic Designer | - |
| 2009 | Dominque R Vine | Qhsp And Case Manager | - |
| 2009 | Jovan D Lesure | Training Counselor | - |
| 2008 | Mary Milano | Program Coordinator And Social Worker | - |
| 2004 | Philip Malizola | - | |
| 2003 | Sharon D Norwood | - | |
| 2001 | Eric T Ralph | - | |
| 1996 | Sheila Townsend | Senior Accountant | - |
| 1985 | James E Voss | Workshop Manager | - |
| - | Bob Atkinson | President And Ceo | - |
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