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Nonprofit · EIN 41-1793954

AMERICAN ACADEMY OF NEUROLOGICAL SURGERY

Tax-exempt · ROCHESTER, MN 55905

Financials

$768K$896K2023$1M$775K2024$926K$693K2025
Revenue Expenses · by fiscal year end
Financials of AMERICAN ACADEMY OF NEUROLOGICAL SURGERY by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990$925,590$693,213$232,377$2,183,721$0$2,183,721
December 31, 2024990$1,007,048$775,496$231,552$1,797,625$0$1,797,625
December 31, 2023990$768,428$895,539-$127,111$1,455,240$0$1,455,240
Financial details: 990 for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$485,000
Membership dues
$290,000
Program service revenue
$406,036
Investment income
$34,554
Other revenue
$0

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$0
Salaries, compensation and benefits (total)
$0
Professional fundraising fees
$0
Legal fees
$5,400
Accounting fees
$2,550
Travel
$12,427
Program services (functional)
$640,134
Management and general (functional)
$53,079

Balance sheet and other

Total assets, start of year
$1,797,625
Total assets, end of year
$2,183,721
Total liabilities, end of year
$0
Net assets, end of year
$2,183,721
Publicly traded securities
$1,583,045
Net assets without donor restrictions
$2,183,721
Gross receipts
$925,590
Employees
0
Volunteers
6
Year formed
1994
State of legal domicile
MN

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended December 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
Nelson Oyesiku MD PhDPresident
Trustee or director, Officer
2$0
Russell Lonser MDPresident
Trustee or director, Officer
2$0
Allan D Levi MDVice President
Trustee or director, Officer
2$0
Sepi Amin-Hanjani MDSecretary
Trustee or director, Officer
2$0
Linda Liau MD PhD MBATreasurer
Trustee or director, Officer
2$0
Aviva Abosch MD PhDTrustee
Trustee or director
2$0
990 for the year ended December 31, 2024: 10 people
NameTitleHours / weekCompensation
SHENANDOAH ROBINSON MDPRESIDENT (UNTIL 10/31/24)
Trustee or director, Officer
2$0
E SANDER CONNOLLY JR MDPRESIDENT (AS OF 11/1/24)
Trustee or director, Officer
2$0
ANIL NANDA MDVICE PRESIDENT (UNTIL 10/31/24)
Trustee or director, Officer
2$0
SEPI AMIN-HANJANI MDSECRETARY
Trustee or director, Officer
2$0
RUSSELL LONSER MDTREASURER
Trustee or director, Officer
2$0
FRED G BARKER IIPAST PRESIDENT (UNTIL 10/31/24)
Trustee or director
2$0
MICHAEL SCHULDER MDHISTORIAN
Trustee or director, Officer
2$0
AVIVA ABOSCH MD PHDMEMBER AT LARGE
Trustee or director
2$0
NELSON OYESIKUPRESIDENT-ELECT (AS OF 11/1/24)
Trustee or director, Officer
2$0
MURAT GUNELVICE PRESIDENT (AS OF 11/1/24)
Trustee or director, Officer
2$0
990 for the year ended December 31, 2023: 8 people
NameTitleHours / weekCompensation
SHENANDOAH ROBINSON MDPRESIDENT
Trustee or director, Officer
2$0
E SANDER CONNOLLY JR MDPRESIDENT-ELECT
Trustee or director, Officer
2$0
ANIL NANDAVICE PRESIDENT
Trustee or director, Officer
2$0
SEPI AMIN-HANJANI MDSECRETARY
Trustee or director, Officer
2$0
RUSSELL LONSER MDTREASURER
Trustee or director, Officer
2$0
FRED G BARKER II MDPAST PRESIDENT
Trustee or director, Officer
2$0
MICHAEL SCHULDER MDHISTORIAN
Trustee or director, Officer
2$0
AVIVA ABOSCHMEMBER AT LARGE
Trustee or director
2$0

Address and contacts

Address (IRS master file)
200 FIRST ST SW, ROCHESTER, MN 55905-0001
In care of
% SHENANDOAH ROBINSON
Principal officer (990 for 2025)
Linda Liau MD PhD MBA
Signed the 990
Linda Liau MD PhD MBA, Treasurer
Phone
(614) 802-1677
Return prepared by
CT Accounting Solutions LLC

Mission

The organization's mission is to foster scientific discovery and innovative research seeking to better the lives of patients suffering from Neurological and Surgical disorders.

990 for the year ended December 31, 2025

Program accomplishments

  • To encourage and disseminate the knowledge and research of Neurological Surgery, and improve the quality of patient care. The organization serves approximately 220 physicians and provides education through its annual meeting and educational courses. The academy also supports several other research endeavors such as grants for young investigators and mentoring activities multiple times a year.
    Expenses $640,134 · revenue $406,036

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990 on file
2024December 31, 2024May 15, 2025990 on file
2023December 31, 2023May 15, 2024990 on file

IRS record

EIN
41-1793954
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1995
Accounting year ends
December
Files
Form 990 or 990-EZ
Category (NTEE)
Education (B99)
Assets (IRS master file)
$2,183,721
Income (IRS master file)
$925,590

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2025$925,590$693,213$2,183,721XML
990December 2024$1,007,048$775,496$1,797,625IRS
990December 2023$768,428$895,539$1,455,240XML
990December 2022$626,131$504,372$1,434,591IRS
990December 2021–––IRS
990December 2020–––IRS
990December 2018–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 41-1793954).

Questions about AMERICAN ACADEMY OF NEUROLOGICAL SURGERY

What is the EIN of AMERICAN ACADEMY OF NEUROLOGICAL SURGERY?
The employer identification number (EIN) of AMERICAN ACADEMY OF NEUROLOGICAL SURGERY is 41-1793954.
Is AMERICAN ACADEMY OF NEUROLOGICAL SURGERY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1995.
Are donations to AMERICAN ACADEMY OF NEUROLOGICAL SURGERY tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does AMERICAN ACADEMY OF NEUROLOGICAL SURGERY file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of AMERICAN ACADEMY OF NEUROLOGICAL SURGERY due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did AMERICAN ACADEMY OF NEUROLOGICAL SURGERY last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended December 2025.
Who is the principal officer of AMERICAN ACADEMY OF NEUROLOGICAL SURGERY?
The 990 for the year ended December 31, 2025 names Linda Liau MD PhD MBA.
Who are the officers and directors of AMERICAN ACADEMY OF NEUROLOGICAL SURGERY?
The 990 for the year ended December 31, 2025 lists 6 people; 0 received compensation from the organization.
How much revenue does AMERICAN ACADEMY OF NEUROLOGICAL SURGERY have?
On its 990 for the year ended December 31, 2025 it reported revenue of $925,590, expenses of $693,213 and total assets of $2,183,721 at year end.

Other nonprofits in ROCHESTER

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