The Johns Hopkins Hospital and Health System
- Provides comprehensive health services. Find locations, physicians and services. Locations are in the Baltimore Metro area.
- http://www.hopkinshospital.org/

Dimensions Healthcare Systems
- Prince George's County based healthcare system. Find locations, profile and programs.
- http://www.dimensionshealth.org/

Bon Secours Health System, Inc.
- An international religious congregation devoted to the care of the poor and sick. The System includes acute care hospitals, nursing care centers, hospice services and numerous other healthcare facilities. (Marriottsville)
- http://www.bshsi.com/

Washington County Health Systems, Inc.
- Operates Washington County Hospital providing comprehensive medical services. Find profile, directory, programs and available services.
- http://www.wchsys.org/

Maryland Hospitals
- MHA: The Association of Maryland Hospitals and Health Systems membership is comprised of community and teaching hospitals, health systems, specialty hospitals, veterans hospitals, and long-term care facilities.
- http://www.mdhospitals.org

Civista Health
- About this regional, not-for-profit integrated health system serving Charles County and the surrounding areas of southern Maryland.
- http://www.civista.org/

Adventist HealthCare
- A non-profit, integrated network of health care services that includes hospitals, home health agencies, nursing centers and other health care services. (Rockville, Maryland)
- http://www.adventisthealthcare.com/