Check before you give

Society of Interventional Oncology Inc

EIN 41-2161648 · Washington, DC

Public records raise at least one point you should look into before giving.

What it says it does

TO ADVANCE INTERVENTIONAL ONCOLOGY AS THE FOURTH PILLAR OF CANCER THERAPY ALONGSIDE MEDICAL, SURGICAL, AND RADIATION ONCOLOGY WORLDWIDE.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. How we rate

We do not score finances when yearly spending is very small or the return has too little detail. The ratios stop meaning much at that size.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. How we rate

This return does not answer enough of the governance questions to score.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. How we rate

Describes programs. Its tax return describes what it does but we have found no measurable results in it.

Programs described in its return (5)

ANNUAL MEETING - SIO HOLDS AN ANNUAL MULTIDISCIPLINARY SCIENTIFIC MEETING, WITH EXHIBITS ON INTERVENTIONAL ONCOLOGY ISSUES. THE MEETING PRESENTS CURRENT INFORMATION ON RESEARCH, NEW PRODUCTS, AND NEW TECHNIQUES IN THE INTERVENTIONAL ONCOLOGY FIELD.
RESEARCH GRANTS - SIO FUNDS SEVERAL RESEARCH GRANTS SINCE 2017 THAT ARE ONGOING PROJECTS. THESE GRANTS ARE DESIGNED TO FUND RESEARCH EVALUATING AND ADVANCING THE INTERACTIONS BETWEEN TWO PREMIER INTERVENTIONAL ONCOLOGIC THERAPIES AND ADVANCING INTERVENTIONAL ONCOLOGY WORLDWIDE. OTHER GRANTS INCLUDE GRANTS FOR INTERVENTIONAL ONCOLOGY/IMMUNO-ONCOLOGY.
OTHER MEETINGS - SIO REGULARLY HOLDS ADDITIONAL MASTER CLASSES UNDER THE IO UNIVERSITY FOR THE PURPOSE OF PROVIDING TRAINING IN INTERVENTIONAL ONCOLOGY RELEVANT TOPICS.
PUBLICATIONS - SIO PUBLISHES VARIOUS RESOURCES RELATED TO INTERVENTIONAL ONCOLOGY INCLUDING IO PERSPECTIVES, IO INSIGHTS, AND THE INSIDER, A MONTHLY PUBLICATIONS DIGEST.
ONLINE COMMUNITY - THE SOCIETY OF INTERVENTIONAL ONCOLOGY (SIO) PRESENTS AN INTERVENTIONAL ONCOLOGY (IO) ONLINE COMMUNITY DESIGNED TO ESTABLISH IO CANCER THERAPY AS THE 4TH PILLAR OF CANCER THERAPYALONGSIDE MEDICAL, SURGICAL, AND RADIATION ONCOLOGY WORLDWIDE.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. How we rate

Is it registered with the IRS? Passed.
Listed in the IRS master file of tax-exempt organizations as a 501(c)(6) business league.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
Has the IRS revoked its tax-exempt status? Passed.
Not on the IRS automatic revocation list.
Source: Automatic revocation of exemption list, Internal Revenue Service, file dated October 13, 2026.
Are donations tax-deductible? Caution.
The IRS master file records contributions to this 501(c)(6) business league as not deductible.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
Is it keeping up with its IRS filings? Passed.
Most recent return on file covers the year ending December 2024.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
How long has it been tax-exempt? Passed.
Recognized by the IRS since August 2006.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
Is it in good standing with state regulators? Passed.
Not on California's list of charities barred from soliciting. Other states are not yet checked.
Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated October 21, 2026.

Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.