Massachusetts · Nonprofit
CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC
CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC (Massachusetts) receives grants from 43 organizations whose IRS filings report $2,932,556 to it, the largest being THE FLATLEY FOUNDATION ($1,050,000). 26 of them have funded it in more than one year.
- Revenue FY2025
- $2.0M
- Funders on record
- 43
- Grants received
- $2.9M
- Net assets
- $8.6M
What Children's Oncology Services of Massachusetts Inc does
Mission
Since 1979, children's oncology services (formerly the boston ronald mcdonald house) has served as a home away from home for children with cancer and their families. As an essential part of their overall care, the house provides its guests with no-cost and convenient accomodations in a safe and comfortable home-like setting. Here, children, families and caregivers find comfort and support among staff, volunteers and other families facing the life-changing realities of childhood cancer and other life-threatening hematological illnesses.
As stated on its FY2025 Form 990.
Program
Children's oncology services (formerly the boston ronald mcdonald house), located in brookline, massachusetts provides a home away from home for children with cancer and their families. The facility, serving up to 22 families per night, includes the following: a 125-year-old victorian house with 9 bedrooms, a kitchen, dining and living rooms, computer room, playroom, game room, and laundry facilities; and a carriage house and annex with 13 studio apartments - the first of their kind in the country - that provide a relatively germ-free home for young patients recovering from bone marrow or stem cell transplants. The house also provides familites with parking, an outdoor patio, picnic area, and playground.
$785,976 spent100% of program spending
The program described on its FY2025 Form 990. Program spending in total: $785,976.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2024 to 2025, from $7.5M to $8.7M (+15%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2020 5%. Grants only. Government contracts and fees sit inside program revenue.
74% of CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC’s revenue is contributions — more donation-reliant than the typical peer (51% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 9 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
The chief executive listed changed between the FY2017 and FY2018, and between the FY2018 and FY2019 filings.
Who funds it, year by year
2017 → 2023: the base broadened from 10 funders to 20 funders, grant income rose $123k → $549k.
16 of 43 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 44% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC’s funders (the co-funder graph). Top 30 of 43 funders by total. Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC has a broad base — no single funder exceeds 36% of grant income, and it takes 3 funders to reach half.
the vertical line marks half of all grant income — 3 funders to its left
53% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC.
Largest funder’s share by year: 2017 44% · 2018 52% · 2019 29% · 2020 48% · 2021 55% · 2022 51% · 2023 36% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
40% of CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC's funders are still giving 3 years after their first grant; 60% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
90% of CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC's grant income comes from Massachusetts funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $1.3M arriving through sponsors registered in 9 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC runs a healthier operating margin than three-quarters of the 4,665 health nonprofits its size.
this organization peer median middle 50% of peers· 4,665 health nonprofits $1M–$10M, FY2025
Organizations like CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Massachusetts
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
66% of spending goes to programs.
Governance
Public support
62%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 14 states
Screen this organization
A dated, signed PDF of the compliance screen for CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC?
- CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC (Massachusetts) receives grants from 43 organizations whose IRS filings report $2,932,556 to it, the largest being THE FLATLEY FOUNDATION ($1,050,000). 26 of them have funded it in more than one year.
- How many funders does CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC have?
- IRS filings report 43 organizations giving $2,932,556 in grants to CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC, 26 of which have funded it in more than one year.
- Who is the largest funder of CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC?
- THE FLATLEY FOUNDATION is the largest funder on record, with $1,050,000 in grants. The full list of funders is on this page.
- How can an organization like CHILDREN'S ONCOLOGY SERVICES OF MASSACHUSETTS INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Massachusetts. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Children's Oncology Services of Massachusetts →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 43 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing