| John Muir Health FoundationEIN 94-2650855 | Health | CA | $6,418,086Mid-sized | 87.93 |
| John Wayne Cancer InstituteEIN 95-4291515 | Health | CA | $15,682,579Large | 71.34 |
| Johns Hopkins All Children's Hospital FoundationEIN 59-2481738 | Health | FL | $23,464,974Large | 82.95 |
| Jonsson Cancer Center FoundationEIN 95-2242757 | Health | CA | $12,794,531Mid-sized | 97.17 |
| Joslin Diabetes CenterEIN 04-2203836 | Health | MA | $88,501,958Large | 84.29 |
| Judeo Christian Health ClinicEIN 59-1605647 | Health | FL | $731,068Small | 88.01 |
| Julie Rogers Gift of Life ProgramEIN 76-0550450 | Health | TX | $1,645,442Small | 57.20 |
| Just One Life/Nefesh Achat B'YisraelEIN 13-3533863 | Health | NY | $976,900Small | 59.56 |
| Karen Ann Quinlan Charitable FoundationEIN 22-3562304 | Health | NJ | $478,763Small | 28.86 |
| Kelly Anne Dolan Memorial FundEIN 23-2108560 | Health | PA | $585,740Small | 81.65 |
| Kid One TransportEIN 63-1165579 | Health | AL | $1,248,673Small | 82.73 |
| Kidney & Urology Foundation of AmericaEIN 13-1777413 | Health | NJ | $296,992Small | 60.11 |
| Kidney Cancer AssociationEIN 36-3719712 | Health | IL | $1,693,437Small | 97.46 |
| Kilo Diabetes & Vascular Research FoundationEIN 23-7152540 | Health | MO | $332,850Small | 74.65 |
| La Comunidad Hispana (LCH)EIN 23-2041915 | Health | PA | $5,092,573Mid-sized | 99.95 |
| Lackey ClinicEIN 54-1850915 | Health | VA | $9,322,438Mid-sized | 91.31 |
| Lakeland Volunteers in MedicineEIN 52-2351630 | Health | FL | $1,812,580Small | 81.96 |
| Lankenau Institute for Medical ResearchEIN 23-2175659 | Health | PA | $16,847,810Large | 81.99 |
| Leg Up FarmEIN 23-2931834 | Health | PA | $2,724,018Small | 80.10 |
| Les Turner ALS FoundationEIN 36-2916466 | Health | IL | $2,469,145Small | 85.71 |
| Leukemia Research FoundationEIN 36-6102182 | Health | IL | $2,490,827Small | 91.93 |
| Lewy Body Dementia AssociationEIN 05-0577683 | Health | GA | $1,151,496Small | 89.94 |
| Life Choices of MemphisEIN 62-1281799 | Health | TN | $1,061,899Small | 83.38 |
| Life NetworkEIN 84-0970592 | Health | CO | $1,490,345Small | 77.24 |
| LifeFlight FoundationEIN 52-2377085 | Health | ME | $1,785,307Small | 83.37 |
| Lighthouse Family RetreatEIN 58-2509728 | Health | GA | $2,313,452Small | 83.31 |
| Little Bit Therapeutic Riding Center EIN 91-1012131 | Health | WA | $2,283,394Small | 84.02 |
| Little Red Door Cancer AgencyEIN 35-0914096 | Health | IN | $1,916,196Small | 86.46 |
| Livestrong FoundationEIN 74-2806618 | Health | TX | $15,394,301Large | 83.66 |
| Living Beyond Breast CancerEIN 23-2734689 | Health | PA | $4,561,647Mid-sized | 96.12 |
| Locks of LoveEIN 65-0755522 | Health | FL | $765,466Small | 90.94 |
| Long Island Alzheimer's FoundationEIN 11-2926958 | Health | NY | $1,489,593Small | 91.39 |
| Long Island Council on Alcoholism & Drug DependenceEIN 11-1833092 | Health | NY | $1,457,603Small | 83.38 |
| Lovelane Special Needs Horseback Riding ProgramEIN 04-3139666 | Health | MA | $1,169,575Small | 78.97 |
| LuMind Research Down Syndrome FoundationEIN 37-1483975 | Health | MA | $2,821,799Small | 85.38 |
| Lung Cancer AllianceEIN 91-1821040 | Health | DC | $3,992,235Mid-sized | 82.85 |
| Lung Cancer Research FoundationEIN 14-1935776 | Health | NY | $4,554,246Mid-sized | 92.20 |
| LUNGevity FoundationEIN 36-4433410 | Health | IL | $7,605,367Mid-sized | 90.96 |
| Lupus Foundation of AmericaEIN 43-1131436 | Health | DC | $13,256,140Mid-sized | 72.88 |
| Lupus Research AllianceEIN 58-2492929 | Health | NY | $28,260,250Large | 91.47 |
| Lymphoma Research FoundationEIN 95-4335088 | Health | NY | $8,784,268Mid-sized | 79.06 |
| Lynn Sage Cancer Research FoundationEIN 36-3727715 | Health | IL | $245,075Small | 92.92 |
| Macula Vision Research FoundationEIN 23-2876473 | Health | PA | $823,042Small | 86.25 |
| Macular Degeneration AssociationEIN 27-3025707 | Health | FL | $1,288,362Small | 73.72 |
| Magic Johnson FoundationEIN 95-4349860 | Health | CA | $1,043,609Small | 79.21 |
| Main Stay Therapeutic FarmEIN 36-3565747 | Health | IL | $924,836Small | 95.05 |
| Make-A-Wish Alaska and WashingtonEIN 91-1329433 | Health | WA | $8,859,325Mid-sized | 78.27 |
| Make-A-Wish ArizonaEIN 86-0409636 | Health | AZ | $6,948,950Mid-sized | 86.43 |
| Make-A-Wish Central and Western North CarolinaEIN 56-1492432 | Health | NC | $5,313,178Mid-sized | 84.24 |
| Make-A-Wish Central CaliforniaEIN 77-0116530 | Health | CA | $2,232,435Small | 83.75 |
| Make-A-Wish Foundation of Central & South TexasEIN 74-2357788 | Health | TX | $4,127,913Mid-sized | 81.45 |
| Make-A-Wish Foundation of Central and Northern FloridaEIN 59-3235806 | Health | FL | $5,140,669Mid-sized | 86.89 |
| Make-A-Wish Foundation of Central New YorkEIN 22-2572086 | Health | NY | $1,700,156Small | 74.64 |
| Make-A-Wish Foundation of ColoradoEIN 74-2273004 | Health | CO | $6,144,150Mid-sized | 84.23 |
| Make-A-Wish Foundation of ConnecticutEIN 22-2710919 | Health | CT | $4,763,360Mid-sized | 87.75 |
| Make-A-Wish Foundation of Eastern North CarolinaEIN 58-1792140 | Health | NC | $3,320,233Small | 76.86 |
| Make-A-Wish Foundation of Greater Los AngelesEIN 95-4107024 | Health | CA | $6,391,728Mid-sized | 73.82 |
| Make-A-Wish Foundation of Greater Ohio, Kentucky and IndianaEIN 34-1471131 | Health | OH | $10,970,738Mid-sized | 76.24 |
| Make-A-Wish Foundation of Greater VirginiaEIN 54-1429614 | Health | VA | $2,539,494Small | 75.49 |
| Make-A-Wish Foundation of HawaiiEIN 99-0220777 | Health | HI | $3,912,730Mid-sized | 90.63 |