Illinois · Nonprofit
American Association of Neurological Surgeons Inc
American Association of Neurological Surgeons Inc (Illinois) receives grants from 4 organizations whose IRS filings report $39,500 to it, the largest being INTEGRA FOUNDATION INC ($24,000). 1 of them have funded it in more than one year.
- Revenue FY2025
- $5.6M
- Funders on record
- 4
- Grants received
- $40k
- Net assets
- $6.2M
What American Association of Neurological Surgeons Inc does
Mission
The AANS promotes the highest quality of patient care and advances the specialty of neurological surgery.
As stated on its FY2025 Form 990.
Programs
Membership Committee Committee Charges: Utilizing the online application program, the Committee receives, processes, and makes recommendations on all applications for membership in the Association, ascertaining that the applicant meets all requirements of membership in all respects.
The Washington Committee Committee Charges: A jointly sponsored committee of the American Association of Neurological Surgeons and the Congress of Neurological Surgeons. Quality neurosurgical care is essential to the health and well-being of society. As the voice of neurosurgery before legislative, regulatory and other health care stakeholders, the AANS/CNS Washington Committee exists to advocate for our specialty and patients. The committee has five subcommittees: Joint Coding and Reimbursement Committee, Joint Communications and Public Relations Committee, Joint Drugs and Devices Committee, Joint Guidelines Review Committee, and Joint Neurosurgery Quality Council.
Professional Conduct Committee Committee Charges: Investigate charges of unprofessional conduct brought by members of the association against other members of AANS.
The 3 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $0.
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 2022 to 2023, from $19M to $52M (+173%).
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.
0% of American Association of Neurological Surgeons Inc’s revenue is contributions — more earned-revenue than three-quarters of its peers (51% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 0 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.
Chief executive
Katherine O Orrico
CEO
As listed on its FY2025 Form 990.
Who funds it, year by year
2019 → 2023: the base held at 1 funder, grant income fell $5k → $3k.
From the IRS filings of American Association of Neurological Surgeons Inc’s funders (the co-funder graph). 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
American Association of Neurological Surgeons Inc leans on a few funders — its largest provides 61% of grant income and the top three 94%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
Largest funder’s share by year: 2019 100% · 2021 100% · 2023 100% — broadly stable.
“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.
Where its funders are
American Association of Neurological Surgeons Inc draws 94% of its grant income from funders outside Illinois, across 4 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. 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
American Association of Neurological Surgeons 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 American Association of Neurological Surgeons 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 Illinois
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Governance
Footprint & structure
Part of a family of 4 related entities
- American Association of Neurosurgeons Inc · exempt
- NeuroPoint Alliance Inc · exempt
- Neurosurgery PAC · exempt
- The Neurosurgery Research and Education Foundation · exempt
Screen this organization
A dated, signed PDF of the compliance screen for American Association of Neurological Surgeons 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 American Association of Neurological Surgeons Inc?
- American Association of Neurological Surgeons Inc (Illinois) receives grants from 4 organizations whose IRS filings report $39,500 to it, the largest being INTEGRA FOUNDATION INC ($24,000). 1 of them have funded it in more than one year.
- How many funders does American Association of Neurological Surgeons Inc have?
- IRS filings report 4 organizations giving $39,500 in grants to American Association of Neurological Surgeons Inc, 1 of which have funded it in more than one year.
- Who is the largest funder of American Association of Neurological Surgeons Inc?
- INTEGRA FOUNDATION INC is the largest funder on record, with $24,000 in grants. The full list of funders is on this page.
- How can an organization like American Association of Neurological Surgeons Inc find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Illinois. 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 American Association of Neurological Surgeons →
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 4 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