Skip to main content
IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 23-7162048

ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE

Tax-exempt · ALEXANDRIA, VA 22306

Financials

$1.3M$798K2023$1.4M$847K2024
Revenue Expenses · by fiscal year end
Financials of ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
May 31, 2025990$1,447,921$847,345$600,576$16,612,813$226,800$16,386,013
May 31, 2024990$1,327,915$797,981$529,934$15,507,733$221,000$15,286,733
Financial details: 990 for the year ended May 31, 2025

Revenue

Contributions, gifts and grants
$398,464
Program service revenue
$268,737
Investment income
$779,495
Net gain from sales of assets
$501,487
Other revenue
$1,225

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$170,616
Other salaries and wages
$488,867
Salaries, compensation and benefits (total)
$737,307
Professional fundraising fees
$0
Accounting fees
$10,255
Occupancy
$45,788
Travel
$7,927
Depreciation
$638
Program services (functional)
$738,417
Management and general (functional)
$105,709
Fundraising (functional)
$3,219

Balance sheet and other

Total assets, start of year
$15,507,733
Total assets, end of year
$16,612,813
Total liabilities, end of year
$226,800
Net assets, end of year
$16,386,013
Net assets without donor restrictions
$16,386,013
Gross receipts
$6,763,846
Employees
10
Volunteers
1
Year formed
1972
State of legal domicile
VA

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 May 31, 2025, highest compensation first.

NameTitleHours / weekCompensationOther / benefits
ROBERT HOPPER JREXECUTIVE DIRECTOR
Officer
40$138,297$12,015
NANCY PARKSSR. PROJECT DIRECTOR
Highest-paid employee
40$137,842$11,074
HENRY HOSR. PROJECT DIRECTOR
Highest-paid employee
40$139,847$1,985
SUSAN SENSISECRETARY/ADMINISTRATOR
Highest-paid employee
40$119,604$11,074
C ANDERSON ENGH JRPRESIDENT/MEDICAL DIRECTOR
Trustee or director, Officer
1$0$0
MICHAEL E WICKSTREASURER/TRUSTEE
Trustee or director, Officer
1$0$0
KEVIN B FRICKATRUSTEE
Trustee or director
1$0$0
WILLIAM G HAMILTONTRUSTEE
Trustee or director
1$0$0
CHARLES K COLLUMTRUSTEE
Trustee or director
1$0$0
JOHN D SCHANZTRUSTEE
Trustee or director
1$0$0
TIM DANEHOWERTRUSTEE
Trustee or director
1$0$0
BRIAN T KARLISCHTRUSTEE
Trustee or director
1$0$0
KAY GOSSTRUSTEE
Trustee or director
1$0$0
MARSHALL MARANTRUSTEE
Trustee or director
1$0$0
990 for the year ended May 31, 2024: 14 people
NameTitleHours / weekCompensationOther / benefits
ROBERT HOPPER JREXECUTIVE DIRECTOR
Officer
40$131,340$20,175
NANCY PARKSSR. PROJECT DIRECTOR
Highest-paid employee
40$133,525$10,368
HENRY HOSR. PROJECT DIRECTOR
Highest-paid employee
40$135,948$1,430
SUSAN SENSISECRETARY/ADMINISTRATOR
Highest-paid employee
40$113,390$10,368
C ANDERSON ENGH JRPRESIDENT/MEDICAL DIRECTOR/TRUSTEE
Trustee or director, Officer
1$0$0
MICHAEL E WICKSTREASURER/TRUSTEE
Trustee or director, Officer
1$0$0
KEVIN B FRICKATRUSTEE
Trustee or director
1$0$0
WILLIAM G HAMILTONTRUSTEE
Trustee or director
1$0$0
CHARLES K COLLUMTRUSTEE
Trustee or director
1$0$0
JOHN D SCHANZTRUSTEE
Trustee or director
1$0$0
TIM DANEHOWERTRUSTEE
Trustee or director
1$0$0
BRIAN T KARLISCHTRUSTEE
Trustee or director
1$0$0
KAY GOSSTRUSTEE
Trustee or director
1$0$0
MARSHALL MARANTRUSTEE
Trustee or director
1$0$0

Address and contacts

Address (IRS master file)
2501 PARKERS LANE 200, ALEXANDRIA, VA 22306-3209
Principal officer (990 for 2024)
ROBERT H HOPPER JR, 2501 PARKERS LANE 200, ALEXANDRIA, VA 22306
Signed the 990
ROBERT H HOPPER JR, EXECUTIVE DIRECTOR
Phone
(703) 619-4411
Return prepared by
KOSITZKA WICKS AND COMPANY

Mission

TO CONDUCT SCIENTIFIC RESEARCH AND EDUCATE HEALTH CARE PROFESSIONALS IN ORTHOPAEDICS AND RHEUMATOLOGY.

990 for the year ended May 31, 2025

Program accomplishments

  • THE FUNDING RECEIVED BY THE ANDERSON ORTHOPAEDIC RESEARCH (AORI) IS USED TO CONDUCT MEDICAL RESEARCH AND QUALITY IMPROVEMENT ACTIVITIES RELATED TO HIP AND KNEE JOINT REPLACEMENT. AORI CONDUCTS BOTH PROSPECTIVE AND RETROSPECTIVE STUDIES WITH THE ULTIMATE GOAL OF SHARING THE INSTITUTE'S FINDINGS WITH THE BROADER MEDICAL COMMUNITY, INCLUDING PATIENTS, THROUGH PUBLICATIONS AND PRESENTATIONS. PROSPECTIVE STUDIES, WHERE VOLUNTEERS CONSENT TO PARTICIPATE, ARE MANAGED BY AORI'S CLINICAL RESEARCH STAFF. THESE STAFF MEMBERS HELP FORMULATE STUDY PROTOCOLS, OBTAIN INSTITUTIONAL REVIEW BOARD (IRB) APPROVAL, CONSENT PARTICIPANTS, SCHEDULE FOLLOW-UP VISITS, ADMINISTER SURVEYS, COMPILE AND ANALYZE OUTCOME DATA, PREPARE IRB REPORTS AS NECESSARY, SUMMARIZE RESULTS FOR STUDY SPONSORS, AND PREPARE ABSTRACTS, PRESENTATIONS, AND MANUSCRIPTS FOR SUBMISSION TO SCIENTIFIC MEETINGS AND PEER-REVIEW JOURNALS. RETROSPECTIVE STUDIES, WHICH USE PRE-EXISTING MEDICAL DATA, ARE CONDUCTED USING INFORMATION OBTAINED AS PART OF ROUTINE PATIENT CARE AND DATA DERIVED FROM AORI'S ELECTRONIC DATABASE THAT ARCHIVES SURGICAL PROCEDURES, CLINICAL VISITS, PATIENT-REPORTED OUTCOME MEASURES, AND ADVERSE EVENTS. BY ANALYZING THIS DATA, AORI STAFF MEMBERS ARE ABLE TO ASSESS THE OUTCOME OF DIFFERENT TYPES OF IMPLANTS AMONG UNIQUE GROUPS OF PATIENTS. THE FUNDING RECEIVED BY AORI SUPPORTS STAFF SALARIES AND BENEFITS, PAYS FOR FEES CHARGED BY AGENCIES THAT OVERSEE AORI'S ACTIVITIES, AND TO PURCHASE STUDY SUPPLIES. COMPUTERS, LABORATORY TESTING EQUIPMENT, AND APPLICATIONS THAT ENABLE THE ACQUISITION AND COMPILATION OF STUDY DATA ARE ALSO PAID FOR WITH THE FUNDS RECEIVED BY AORI. DURING THE PAST YEAR, AORI-AFFILIATED RESEARCHERS PUBLISHED 27 PAPERS IN ORTHOPAEDIC JOURNALS. AORI RESEARCHERS ALSO PRESENTED 37 SCIENTIFIC TALKS, 18 POSTERS AT LOCAL AND NATIONAL ORTHOPAEDIC MEETINGS AND 1 BOOK CHAPTER.
    Expenses $738,417 · revenue $268,737

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 May, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025May 31, 2026October 15, 2026Not on file
2024May 31, 2025October 15, 2025990 on file
2023May 31, 2024October 15, 2024990 on file

IRS record

EIN
23-7162048
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1973
Accounting year ends
May
Files
Form 990 or 990-EZ
Assets (IRS master file)
$16,612,813
Income (IRS master file)
$6,763,846

Filing history

FormYear endedRevenueExpensesAssetsReturn
990May 2025$1,447,921$847,345$16,612,813XML
990May 2024$1,327,915$797,981$15,507,733XML
990May 2023$1,152,046$884,146$13,634,844IRS
990May 2022–––IRS
990May 2021–––IRS
990May 2019–––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 23-7162048).

Questions about ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE

What is the EIN of ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE?
The employer identification number (EIN) of ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE is 23-7162048.
Is ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1973.
Are donations to ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE 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 ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE due?
The return for tax year 2025 (the year ending May 31, 2026) is due October 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended May 2025.
Who is the principal officer of ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE?
The 990 for the year ended May 31, 2025 names ROBERT H HOPPER JR.
Who are the officers and directors of ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE?
The 990 for the year ended May 31, 2025 lists 14 people; 4 received compensation from the organization, the highest $138,297 (ROBERT HOPPER JR, EXECUTIVE DIRECTOR).
How much revenue does ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE have?
On its 990 for the year ended May 31, 2025 it reported revenue of $1,447,921, expenses of $847,345 and total assets of $16,612,813 at year end.

Other nonprofits in ALEXANDRIA

All nonprofits in ALEXANDRIA · Virginia