| Henry M Jackson Foundation for the Advancement of Military MedicineBethesda | Form 990 | $616,261,455FY2025 |
| The Gog Foundation IncEdgewater | Form 990 | $92,424,680FY2025 |
| Foundation for the National Institute of Health IncRockville | Form 990 | $78,507,209FY2024 |
| American Urological Association Education and Research IncLinthicum | Form 990 | $41,229,959FY2025 |
| Foundation Fighting Blindness IncColumbia | Form 990 | $36,615,169FY2025 |
| American College of Gastroenterology IncRockville | Form 990 | $28,957,030FY2024 |
| Cvpath Institute IncGaithersburg | Form 990 | $13,092,271FY2024 |
| Immune Deficiency FoundationHanover | Form 990 | $11,404,598FY2025 |
| Cancer Research America NFCR IncRockville | Form 990 | $11,095,696FY2024 |
| Urology Care Foundation IncLinthicum Heights | Form 990 | $9,577,107FY2025 |
| Heart Failure Society of America IncRockville | Form 990 | $9,459,756FY2025 |
| Anatomic Gift Foundation IncHanover | Form 990 | $8,290,549FY2024 |
| Aoac InternationalRockville | Form 990 | $7,175,708FY2025 |
| Bladder Cancer Advocacy Network IncBethesda | Form 990 | $6,772,678FY2025 |
| Caring Cross IncGaithersburg | Form 990 | $6,365,843FY2024 |
| Biohealth Innovation IncRockville | Form 990 | $4,436,123FY2024 |
| Center for Disease Dynamics Economics & Policy IncSilver Spring | Form 990 | $3,712,319FY2024 |
| Logicqual Research Institute IncElkridge | Form 990 | $3,223,890FY2025 |
| Diabetes Research and Wellness Foundation IncBethesda | Form 990 | $3,182,818FY2024 |
| Osteogenesis Imperfecta Foundation IncGaithersburg | Form 990 | $2,607,851FY2025 |
| The American Porphyrias Expert Collaborative IncBethesda | Form 990 | $2,305,739FY2024 |
| American Speech-Language-Hearing FoundationRockville | Form 990 | $2,108,854FY2024 |
| American Society for Investigative Pathology IncRockville | Form 990 | $2,070,616FY2024 |
| The Lilabean Foundation IncSilver Spring | Form 990 | $1,807,658FY2025 |
| Aim-Hi Accelerator Fund IncRockville | Form 990 | $1,566,732FY2024 |
| American Association on Health and Disability IncRockville | Form 990 | $1,525,250FY2025 |
| National Pancreas FoundationBethesda | Form 990 | $1,385,003FY2025 |
| Brem Foundation to Defeat Breast Cancer IncSilver Spring | Form 990 | $1,375,820FY2024 |
| United States Association for the Study of Pain IncAnnapolis | Form 990 | $1,133,370FY2024 |
| Medical Technology and Practice Patterns Institute IncBethesda | Form 990 | $911,470FY2024 |
| The Focus Foundation IncCrofton | Form 990 | $795,002FY2024 |
| Hurwitz Breast Cancer Fund IncFrederick | Form 990 | $660,024FY2024 |
| Prevent Alzheimers Disease 2020Potomac | Form 990 | $442,190FY2024 |
| Rare Olive Org IncBethesda | Form 990 | $414,642FY2024 |
| DETERMINED2HEAL Foundation IncPotomac | Form 990 | $409,320FY2024 |
| Laughlin Family Foundation for Rare CancersCrofton | Form 990 | $364,164FY2024 |
| Foundation for Rare Disease Research IncSilver Spring | Form 990 | $339,269FY2025 |
| There Goes My HeroLutherville-Timonium | Form 990 | $308,134FY2025 |
| Tissue Bank Asbestos Research Charitable TrustLanham | Form 990 | $265,596FY2025 |
| Maryland Association for Parkinson Support IncBrooklandville | Form 990 | $252,158FY2024 |
| Institute of Neuromorphic Engineering Foundation IncBaltimore | Form 990 | $240,722FY2024 |
| Growingstems IncHollywood | Form 990 | $214,510FY2025 |
| PBD ProjectBethesda | Form 990 | $214,314FY2025 |
| Giving Strength IncFulton | Form 990 | $203,911FY2024 |
| Willie Strong Foundation LimitedBethesda | Form 990-EZ | $190,863FY2022 |
| Scarring Alopecia FoundationPikesville | Form 990-EZ | $179,512FY2025 |
| Parents Guide to Cord Bloodfoundation IncBrookeville | Form 990-EZ | $158,930FY2025 |
| Fight 4 Diabetes Cure IncKensington | Form 990-EZ | $132,435FY2025 |
| Chinese Biopharmaceutical Association-USA IncPotomac | Form 990 | $129,578FY2025 |
| Chondrosarcoma CS FoundationBowie | Form 990-EZ | $117,233FY2025 |