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ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE

EIN 23-7162048 ALEXANDRIA, VA

Revenue 2024
$1,447,921
Expenses 2024
$847,345

Program services were 87.1% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
Classification
1000
Street
2501 PARKERS LANE 200

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2024

Mission

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

Activities or mission (Part I)

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

  • 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

As filed on the 2024 return. The filer continues this part on Schedule O, which is not shown here.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • C ANDERSON ENGH JR

    PRESIDENT/MEDICAL DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • MICHAEL E WICKS

    TREASURER/TRUSTEE

    Total calculated
    $0
    Hours/week
    1

  • KEVIN B FRICKA

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1

  • WILLIAM G HAMILTON

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1

  • CHARLES K COLLUM

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1

  • JOHN D SCHANZ

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1

  • TIM DANEHOWER

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1

  • BRIAN T KARLISCH

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1

  • KAY GOSS

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1

  • MARSHALL MARAN

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1

  • ROBERT HOPPER JR

    EXECUTIVE DIRECTOR

    Total calculated
    $150,312
    From this org
    $138,297
    From related orgs
    $0
    Other
    $12,015
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $138,297
    Bonus
    $0
    Other
    $0
    Deferred
    $0
    Nontaxable benefits
    $12,015
    Filer's total
    $150,312

  • SUSAN SENSI

    SECRETARY/ADMINISTRATOR

    Total calculated
    $130,678
    From this org
    $119,604
    From related orgs
    $0
    Other
    $11,074
    Hours/week
    40

  • HENRY HO

    SR. PROJECT DIRECTOR

    Total calculated
    $141,832
    From this org
    $139,847
    From related orgs
    $0
    Other
    $1,985
    Hours/week
    40

  • NANCY PARKS

    SR. PROJECT DIRECTOR

    Total calculated
    $148,916
    From this org
    $137,842
    From related orgs
    $0
    Other
    $11,074
    Hours/week
    40

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $1,447,921
    Expenses
    $847,345
    Contributions
    $398,464
    Grants paid
    $0
  • 2023
    Revenue
    $1,327,915
    Expenses
    $797,981
    Contributions
    $463,129
    Grants paid
    $0
  • 2022
    Revenue
    $1,152,046
    Expenses
    $884,146
    Contributions
    $634,429
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2021 · 990

    Revenue
    $2,555,156
    Expenses
    $935,790
    Assets (EOY)
    $13,657,075

  • 2020 · 990

    Revenue
    $1,464,280
    Expenses
    $1,032,082
    Assets (EOY)
    $14,385,609

  • 2019 · 990

    Revenue
    $2,360,830
    Expenses
    $1,082,973
    Assets (EOY)
    $12,482,134

  • 2018 · 990

    Revenue
    $1,237,928
    Expenses
    $982,842
    Assets (EOY)
    $10,425,049

  • 2017 · 990

    Revenue
    $1,301,686
    Expenses
    $943,320
    Assets (EOY)
    $9,750,524

  • 2016 · 990

    Revenue
    $926,231
    Expenses
    $974,441
    Assets (EOY)
    $9,229,860

  • 2015 · 990

    Revenue
    $1,141,201
    Expenses
    $988,782
    Assets (EOY)
    $8,636,721

  • 2014 · 990

    Revenue
    $1,306,644
    Expenses
    $929,305
    Assets (EOY)
    $8,687,165

  • 2013 · 990

    Revenue
    $1,444,719
    Expenses
    $893,127
    Assets (EOY)
    $8,220,326

  • 2012 · 990

    Revenue
    not reported
    Expenses
    $907,797
    Assets (EOY)
    $7,209,192

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

Related organizations

From Schedule R Part II, where a filer lists the tax-exempt organizations it is related to by control. It does not record shared board members or money.

Declared on its 2024 return

Declared as related by

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 26 October 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.