Oak Leyden Developmental Services Inc
To help people with developmental disabilities meet life's challenges and reach their highest potential.
Oak Leyden Developmental Services Inc at a glance
In short: Oak Leyden Developmental Services Inc gave $100K across 1 grant in 2025 (avg $100K), mostly in Illinois. Source: 2025 IRS Form 990.
- Annual giving (2025)
- $100,000
- Grants made (2025)
- 1
- Average grant
- $100,000
- Median grant
- $100,000
- Total assets
- $6,686,270
- +28.6% vs 2024
- Primary geography
- Illinois (100% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated September 2026.
Who Oak Leyden Developmental Services Inc funds
How this funder distributes its grants
Top Recipients
Top recipient in 2025
The largest 2025 recipient was Community Supported Care Partners of Illinois LLC ($100K).
Grant Size Distribution
1 grant across all recorded years
The most common grant size was in the $100–250K range: 1 grant of 1 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of the 2025 grant dollars on its one itemized grant.
States
Cities
Giving History
Giving Over Time
Total grant dollars and number of grants per year
In 2025 it made 1 grant totaling $100K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Community Supported Care Partners of Illinois LLC Chicago, IL | Capital contribution pursuant to partnership agreement with related 501(c)(3) llc | $100,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $6,686,270 | $10,467,620 | $9,810,694 | $100,000 | 1 | $478,110 |
| 2024 | $5,198,573 | $9,387,894 | $8,649,562 | — | — | $1,256 |
| 2023 | $4,785,985 | $7,497,645 | $7,305,359 | — | — | $-40,534 |
| 2022 | $4,905,853 | $6,851,792 | $6,624,232 | — | — | — |
| 2021 | $4,710,482 | $6,869,357 | $6,273,994 | — | — | — |
| 2020 | $5,255,700 | $6,251,263 | $6,244,000 | — | — | — |
About Oak Leyden Developmental Services Inc
Based on IRS filings
Oak Leyden Developmental Services Inc is a public charity focused on People with disabilities, based in Oak Park, IL. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $6.7M in total assets. In 2025, it awarded 1 grant totaling $100K. Net investment income was $478K.
Focus Areas
Leadership & Key People
Officers and directors from IRS filings
Oak Leyden Developmental Services Inc is led by Raymond McMahon, CEO on every filing since 2023; 2 of 10 officers listed in 2025 are compensated.
Officers on the 2025 filing
Raymond McMahon
CEO
On filings since 2023
40 hrs/week
$128K (2023) → $154K (2025)
Deno Andrews
President
On filings since 2021
2 hrs/week
No compensation reported
Sandra Vanoskey
Senior Director of Adult Services
New on the 2025 filing
40 hrs/week
$102K (2025)
Cory Wesley
Director
On filings since 2022
1 hr/week
No compensation reported
Howie Japlon
Director
New on the 2025 filing
1 hr/week
No compensation reported
Michael Weber
Director
New on the 2025 filing
1 hr/week
No compensation reported
Tom Jacobs
Director
New on the 2025 filing
1 hr/week
No compensation reported
Craig Volpe
Vice President
On filings since 2020
2 hrs/week
No compensation reported
Laura Gerstner
Secretary
Director → Secretary, 2021
On filings since 2020
2 hrs/week
No compensation reported
Cathy McClendon
Treasurer
On filings since 2022
2 hrs/week
No compensation reported
Former officers (12)
- Former: Jennifer Doyle (2020–2024) — Director
- Former: William Hoekwater (2020–2024) — Director
- Former: Peter Volpe (2023–2024) — Director
- Former: Chuck Krugel (2020–2022) — Past President
- Former: Melissa Wyatt (2020–2022) — Director
- Former: Rj McMahon (2021–2022) — Chief Executive Officer
- Former: Vladimir Arezina (2021–2022) — Director
- Former: Bertha Magana (2020–2021) — Former Chief Executive Officer
- Former: Maximilano Uribe (2020–2021) — Director
- Former: Silvia Brito-Todd (2020–2021) — Treasurer
- Former: Steve Pratapas (2020–2021) — Interim Executive Director
- Former: Tony Rodriguez (2020) — Secretary
Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $154K, to Raymond McMahon (CEO). 2 officers or directors reported compensation on that filing.
Frequently asked questions about Oak Leyden Developmental Services Inc
How much does Oak Leyden Developmental Services Inc give each year?
Oak Leyden Developmental Services Inc gave $100K across 1 grant in 2025, according to its 2025 IRS Form 990.
How large is Oak Leyden Developmental Services Inc?
Oak Leyden Developmental Services Inc reported $6.7M in total assets on its 2025 IRS Form 990. Its revenue that year was $10.5M.
What is Oak Leyden Developmental Services Inc?
Oak Leyden Developmental Services Inc is a public charity focused on People with disabilities, based in Oak Park, IL. It holds $6.7M in total assets as of 2025.
Where does Oak Leyden Developmental Services Inc operate?
Oak Leyden Developmental Services Inc has awarded grants in Illinois.
What is Oak Leyden Developmental Services Inc's EIN?
Oak Leyden Developmental Services Inc's EIN (Employer Identification Number) is 23-7380622. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- Added Form 990 for fiscal year 2025 (received by the IRS May 14, 2026)
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