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Nonprofits in RIVERHEAD, NY

140 tax-exempt organizations with a return on IRS file.

Largest nonprofits in RIVERHEAD by revenue

Top 5s in RIVERHEAD

Most raised in gifts and grants

Contributions, gifts and grants received in the year

  1. 1Central Suffolk Hospital Foundation990, year ended Dec 2024$7.1M
  2. 2Riverhead Free Library990, year ended Jun 2025$5.7M
  3. 3Timothy Hill Childrens Ranch Inc990, year ended Jun 2025$3.2M
  4. 4Corey Foundation990-PF, year ended Dec 2025$2.7M
  5. 5Riverhead Volunteer Ambulance Corps Inc990, year ended Dec 2024$1.4M

Largest reserves

Net assets (fund balance) at year end

  1. 1Robert David Lion Gardiner Foundation Inc990-PF, year ended Dec 2025$117M
  2. 2Central Suffolk Hospital Foundation990, year ended Dec 2024$48.5M
  3. 3Corey Foundation990-PF, year ended Dec 2025$26.2M
  4. 4Laurents Hatcher Foundation Inc990-PF, year ended Dec 2024$21.4M
  5. 5Timothy Hill Childrens Ranch Inc990, year ended Jun 2025$12.3M

Highest-paid people

Compensation from the organization and related organizations, including other pay

  1. 1Joy O' ShaugnessyAssociate Executive Director · East End Disability Associates Inc$273.3K
  2. 2Thaddaeus HillExecutive Director · Timothy Hill Childrens Ranch Inc$219.7K
  3. 3Kathryn M CurranExecutive Di · Robert David Lion Gardiner Foundation Inc$218.6K
  4. 4Jeanette PermenterChief Operating Officer to CEO (Start 06/2025) · Aid to the Developmentally Disabled Inc$210.3K
  5. 5Holly GurnickChief Financial Officer · Aid to the Developmentally Disabled Inc$188.7K

All nonprofits in RIVERHEAD, A–Z (page 1 of 2)