Cancer Organizations: M
- Memorial Hospital and Medical Center of Cumberland, Incorporated
- Memorial Hospital at Gulfport
- Memorial Hospital of Carbondale
- Memorial Hospital of Gardena
- Memorial Hospital of Rhode Island
- Memorial Hospital of Salem County
- Memorial Hospital of South Bend
- Memorial Hospital of Tampa
- Memorial Medical Center
- Memorial Medical Center
- Memorial Radiotherapy Center
- Memorial Regional Medical Center
- Memorial Sloan-Kettering Cancer Center
- Memorial Sloan-Kettering Cancer Center - Basking Ridge
- Memorial Sloan-Kettering Cancer Center - Rockville Centre
- Memorial Sloan-Kettering Cancer Center Commack
- Memorial Sloan-Kettering Cancer Center Hauppauge
- Memorial Sloan-Kettering Cancer Center at Phelps Memorial Hospital Center
- Memorial Sloan-Kettering Cancer Center at Saint Clare's Hospital
- Memorial University of Newfoundland
- Memphis Cancer Center
- Memphis Dermatology Clinic, PA
- Memphis Gastroenterology Group, PC
- Memphis Surgical Specialists
- Menarini Group
- Mendez Transplant and Urological Medical Group
- Mendota Community Hospital
- Menorah Medical Center
- Menorah Medical Park
- Menssana Research, Incorporated
- Mentor Corporation
- MeoClinic GmbH
- Mercer Bucks Oncology-Hematology - Lawrenceville
- Mercer Bucks Oncology-Hematology - Trenton
- Merck Frosst Canada Limited
- Merck Limited - Japan
- Merck Sharp & Dohme Oesterreich GmbH
- Merck Sharp & Dohme Chibret AG
- Merck Sharp & Dohme GmbH - Germany
- Merck Sharp & Dohme Limited
- Merck Sharp & Dohme Limited - United Kingdom
- Merck Sharp and Dohme - Paris
- Merck Sharp and Dohme - Rome
- Merck Sharp and Dohme Australia PTY LTD
- Merck Sharp and Dohme New Zealand LTD
- Merck Sharp and Dohme de Espana, SA
- Merck and Company, Incorporated
- Merck and Company, Incorporated
- Merck and Company, Incorporated
- Merck and Company, Incorporated - North Wales
- Mercy Cancer Center
- Mercy Cancer Center at Mercy Medical Center - Des Moines
- Mercy Cancer Center at Mercy Medical Center
- Mercy Cancer Center at Mercy Medical Center
- Mercy Cancer Center at Mercy Medical Center - North Iowa
- Mercy Cancer Center at Mercy San Juan Medical Center
- Mercy Cancer Center at Mt. Shasta
- Mercy Cancer Institute at Mercy Hospital
- Mercy Capitol Hospital
- Mercy Clinic East
- Mercy Community Hospital
- Mercy Fitzgerald Hospital
- Mercy General Health Partners
- Mercy General Hospital
- Mercy Health Center
- Mercy Health Research
- Mercy Hospital
- Mercy Hospital
- Mercy Hospital
- Mercy Hospital
- Mercy Hospital
- Mercy Hospital Anderson
- Mercy Hospital Cancer Center - Scranton
- Mercy Hospital Clermont
- Mercy Hospital Mt. Airy
- Mercy Hospital Western Hills
- Mercy Hospital and Health Care Center
- Mercy Hospital and Medical Center
- Mercy Hospital at Wilkes-Barre
- Mercy Hospital for Women
- Mercy Hospital for Women
- Mercy Hospital of Buffalo
- Mercy Hospital of Tiffin
- Mercy Hospital-Detroit
- Mercy Jeannette Hospital
- Mercy Medical Center
- Mercy Medical Center
- Mercy Medical Center
- Mercy Medical Center
- Mercy Medical Center
- Mercy Medical Center
- Mercy Medical Center
- Mercy Medical Center - Dubuque
- Mercy Medical Center - Mt. Shasta
- Mercy Medical Center - Sioux City
- Mercy Medical at Pulaski
- Mercy Memorial Cancer Center at Mercy Memorial Health
- Mercy Memorial Hospital - Monroe
- Mercy Outpatient Center
- Mercy Private Hospital