Data update history
December 3, 2023
Posted financials
Added Form 990 for fiscal year 2022
December 2, 2023
Updated personnel
Identified 2 new personnel
November 9, 2023
Updated personnel
Identified 11 new personnel
August 10, 2023
Posted financials
Added Form 990 for fiscal year 2021
May 18, 2023
Updated personnel
Identified 6 new personnel
Nonprofit Types
Professional associationsBusiness and community development organizationsHeadquarter / parent organizations
Issues
HealthDiseases and disordersCancerBusiness and industry
Characteristics
Memberships
General information
- Address
- PO Box 7801
- Mclean, VA 22106
- Metro area
- Washington-Arlington-Alexandria, DC-VA-MD-WV
- County
- Fairfax County, VA
- Website URL
- proton-therapy.org/Â
- Phone
- (202) 919-4536
IRS details
- EIN
- 27-4380124
- Fiscal year end
- December
- Taxreturn type
- Form 990
- Year formed
- 2010
- Eligible to receive tax-deductible contributions (Pub 78)
- No
Categorization
- NTEE code, primary
- S41: Promotion of Business
- NAICS code, primary
- 813920: Professional Associations
- Parent/child status
- Central organization
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