| ST CATHERINE OF SIENA MEDICAL CENTER | $280,926,875 | $277,086,714 |
| DEVELOPMENTAL DISABILITIES INSTITUTE INC | $110,036,994 | $108,826,544 |
| SCOPE EDUCATION SERVICES | $18,966,133 | $22,182,248 |
| GUIDE DOG FOUNDATION FOR THE BLIND INC | $12,970,685 | $7,070,974 |
| AMERICAS VETDOGS THE VETERANS K-9 CORPS INC | $8,606,857 | $6,777,883 |
| SIENA VILLAGE | $28,215 | $5,048,609 |
| NEW YORK STATE PUBLIC HIGH SCHOOL XI SECTION | $4,632,921 | $4,500,302 |
| SMITHTOWN PERFORMING ARTS COUNCIL INC | $1,402,248 | $1,384,868 |
| AMERICAN FEDERATION OF TEACHER 3010 SMITHTOWN TEACHERS ASSOCIA | $1,000,490 | $897,947 |
| INTERNATIONAL ALLIANCE OF THEATRICAL STAGE EMPLOYEES LOCAL 100 | $719,162 | $690,988 |
| NORTH ATLANTIC ALLIANCE ASSOCIATIONINC | $555,543 | $560,844 |
| SMITHTOWN SCHOOLS EMPLOYEES ASSOCIATION | $521,126 | $526,100 |
| MINISTERIO JESUCRISTO VIVE INC | $538,378 | $505,700 |
| JACKS FOUNDATION FOR THE HOMELESS INC | $193,174 | $474,507 |
| ENVIRONMENTAL CENTERS OF SETAUKET-SMITHTOWN INC | $496,995 | $439,633 |
| BOOSTER CLUB OF SMITHTOWN INC | $410,980 | $410,401 |
| GUARDIANS OF RESCUE INC | $541,000 | $405,441 |
| FRIENDS OF THE RETIRED AND SENIOR VOLUNTEER PROGRAM OF SUFFOLKINC | $402,218 | $403,902 |
| SMITHTOWN HISTORICAL SOCIETY | $264,825 | $386,007 |
| SMITHTOWN TEACHERS ASSOC BENEF TRUST | $360,824 | $362,975 |
| NEW YORK STATE RHEUMATOLOGY SOCIETY INC | $324,150 | $294,123 |
| ST CATHERINE OF SIENA MEDICAL CENTER FOUNDATION | $279,730 | $279,902 |
| DDI FOUNDATION INC | $135,285 | $252,735 |
| PHYSICIAN STAFF FUND AT ST CATHERINES | $186,262 | $189,425 |
| PTA NEW YORK CONGRESS | $199,950 | $186,871 |