IRS organization
JOHN J MCDONELL MARGARET T O BRIEN FOUNDATION
This listing describes a nonprofit organization. Tax classification is separate from state registration and operating status.
JOHN J MCDONELL MARGARET T O BRIEN FOUNDATION is listed as an IRS organization in New York, NY. Reported status: Unconditional Exemption.
Record reference date: October 13, 2026. Details may be incomplete or outdated.