| University of Maryland Dermatologists P ABaltimore | Form 990 | $8,541,672FY2025 |
| Northbay Education IncNorth East | Form 990 | $8,481,123FY2025 |
| University of Maryland Orthopaedic Trauma Associates P ABaltimore | Form 990 | $8,466,428FY2025 |
| St Martins Home for the Aged Little Sisters of the Poor Baltimore IncBaltimore | Form 990 | $8,422,314FY2025 |
| American Institute of Ultrasound in MedicineLaurel | Form 990 | $8,084,992FY2024 |
| Community Rescue Service IncHagerstown | Form 990 | $7,861,468FY2025 |
| University of Maryland OncologyBaltimore | Form 990 | $7,064,781FY2025 |
| Totally Linking Care in Maryland IncLeonardtown | Form 990 | $6,915,773FY2025 |
| American Society for Pharmacology and Experimental Therapeutics IncRockville | Form 990 | $6,734,604FY2024 |
| Mobile Medical Care IncRockville | Form 990 | $6,720,153FY2025 |
| Montgomery County Collaboration CouncilRockville | Form 990 | $6,700,059FY2025 |
| Sacred Hearted Home IncHyattsville | Form 990 | $6,357,649FY2025 |
| National Association of School Nurses IncSilver Spring | Form 990 | $6,335,220FY2025 |
| Meritus Healthcare Foundation IncHagerstown | Form 990 | $6,235,908FY2025 |
| Project Healing Waters Fly Fishing IncLa Plata | Form 990 | $5,807,782FY2025 |
| National Association for Public Health Stats and Info SystemsSilver Spring | Form 990 | $5,648,949FY2024 |
| Maryland Emergency Medicine NetworkBaltimore | Form 990 | $5,634,251FY2025 |
| Heart to Hand IncUpper Marlboro | Form 990 | $5,409,476FY2024 |
| Warwick Manor Behavioral Health IncEast New Market | Form 990 | $5,302,508FY2024 |
| Keralink International IncBaltimore | Form 990 | $4,967,151FY2024 |
| Mercy Health Clinic IncGaithersburg | Form 990 | $4,630,428FY2024 |
| Mercy Transitional Care ServicesBaltimore | Form 990 | $4,545,550FY2025 |
| Society of Health and Physical EducatorsAnnapolis Junction | Form 990 | $4,495,788FY2025 |
| Tidalhealth Foundation IncSalisbury | Form 990 | $4,430,318FY2025 |
| American College Health AssociationSilver Spring | Form 990 | $4,288,783FY2024 |
| Adoptions Together IncGreenbelt | Form 990 | $3,774,965FY2025 |
| Western Maryland Area Health Education CenterCumberland | Form 990 | $3,586,813FY2025 |
| Rad-Aid International IncChevy Chase | Form 990 | $3,584,824FY2025 |
| Color of Gastrointestinal Illness IncGlenarden | Form 990 | $3,534,372FY2023 |
| Hampstead Volunteer Fire Engine and Hose Company-1Hampstead | Form 990 | $3,335,048FY2025 |
| Brookes House IncHagerstown | Form 990 | $3,328,124FY2024 |
| Maryland Patient Safety CenterElkridge | Form 990 | $2,918,227FY2025 |
| University of Maryland Oral Maxillofacial Surgery Assoc P ABaltimore | Form 990 | $2,711,205FY2025 |
| Association of Professors of Gynecology & ObstetricsCrofton | Form 990 | $2,706,567FY2025 |
| Nova Institute for Health IncBaltimore | Form 990 | $2,704,547FY2024 |
| Qlarant Foundation IncEaston | Form 990 | $2,532,248FY2025 |
| Charm City Care Connection IncBaltimore | Form 990 | $2,522,342FY2025 |
| Montgomery County Language Minority Health Project IncSilver Spring | Form 990 | $2,473,512FY2025 |
| Holy Cross Health Foundation IncSilver Spring | Form 990 | $2,446,769FY2025 |
| Rehabilitation Systems IncLanham | Form 990 | $2,255,934FY2025 |
| Snow Hill Volunteer Fire Company IncSnow Hill | Form 990 | $2,252,662FY2025 |
| Give an Hour Nonprofit CorporationGaithersburg | Form 990 | $2,250,372FY2025 |
| Maryland Partnership for Prevention IncOwings Mills | Form 990 | $2,221,472FY2024 |
| Big Cities Health CoalitionTakoma Park | Form 990 | $2,195,680FY2024 |
| Bethesda Chevy Chase Rescue Squad IncBethesda | Form 990 | $2,070,153FY2025 |
| Abortion Fund of Maryland IncBaltimore | Form 990 | $1,965,046FY2024 |
| Women As One IncSeverna Park | Form 990 | $1,957,108FY2025 |
| Ingleside at Home IncRockville | Form 990 | $1,949,448FY2024 |
| Heritage Care IncHyattsville | Form 990 | $1,871,566FY2024 |
| Medstar Vna Healthcare IncGreenbelt | Form 990 | $1,835,066FY2025 |