M.D. Anderson Cancer Center
Macular Degeneration Foundation
Macular Degeneration Partnership
MAGIC Foundation for Children's Growth
Maine Department of Health and Human Services
Making Headway Foundation, Inc.
Malignant Hyperthermia Association of the United States
Management Sciences for Health
Maple Syrup Urine Diseases Family Support Group
March of Dimes Birth Defects Foundation
Maryland Department of Health and Mental Hygiene
Massachusetts Council on Compulsive Gambling
Massachusetts Department of Public Health
Maternal and Child Health Bureau, Health Resources and Services Administration
Maternal and Child Health Information Resource Center, Health Resources and Services Administration
Mayo Foundation for Medical Education and Research
Med Help International
Medical Institute for Sexual Health
Medical Library Association
Medicare Rights Center
Mended Hearts, Inc.
Meningitis Foundation of America Inc.
Men's Health Network
Mental Help Net
Mercy Medical Airlift
Michigan Department of Community Health
Midwives Alliance of North America
Migraine Awareness Group: A National Understanding for Migraineurs
Milbank Memorial Fund
Mine Safety and Health Administration, U.S. Department of Labor
Minnesota Department of Health
Miracle Flights for Kids
Mississippi State Department of Health
Missouri State Department of Health and Senior Services
Mobility Unlimited, Inc.
Montana Department of Public Health and Human Services
Morgellons Research Foundation
Mothers & More
Mothers Against Drunk Driving
Mothers of Supertwins
Multiple Myeloma Research Foundation
Multiple Sclerosis Association of America
Multiple Sclerosis Foundation, Inc.
MUMS National Parent-to-Parent Network, Mothers United for Moral Support, Inc.
Muscular Dystrophy Association
Myasthenia Gravis Foundation of America, Inc.