Cancer Organizations: U
- U-Systems, Incorporated
- U.O. Ortopedia
- U.S. Army Medical Command
- U.S. Department of Health & Human Services
- U.S. Oncology Research Inc.
- U.S.L. 10 Villa Ognissanti
- U.S.S. Theodore Roosevelt
- U.S.S.L. 72 Magenta
- U.T. Medical Center Cancer Institute
- U.Z. Gasthuisberg
- U.Z. Sint-Rafael
- U3 Pharma AG
- UAB Gynecologic Oncology at University of Alabama Hospital
- UAB Medical West
- UC Physicians
- UCB Pharma
- UCL Cancer Institute
- UCL Cancer Trials Centre at Mount Vernon Cancer Centre
- UCLA Center for East-West Medicine
- UCLA Center for Human Nutrition
- UCLA Clinical AIDS Research and Education (CARE) Center
- UCLA Community Oncology Services - Los Angeles
- UCLA Cousins Center for Psychoneuroimmunology
- UCSF Fresno Center for Medical Education and Research
- UCSF Helen Diller Family Comprehensive Cancer Center
- UCSF Medical Center at Parnassus
- UCT Private Academic Hospital
- UFA Research Center at Russian Academy of Sciences
- UHHS Chagrin Highlands Medical Center
- UHHS Richmond Heights Hospital
- UHHS Westlake Medical Center
- UK Clinical Research Network
- UMASS Memorial Cancer Center - University Campus
- UMC Orange Grove
- UMC Southwest Cancer and Research Center
- UMDNJ University Hospital
- UMG General Surgery - Medical Ridge Drive
- UMG General Surgery - Patewood Drive
- UNIMONTES - Campus Montes Claros
- UNMC Eppley Cancer Center at the University of Nebraska Medical Center
- UPMC Cancer Centers
- UPMC - Moon
- UPMC - Shadyside
- UPMC Cancer Center - Arnold Palmer Pavilion
- UPMC Cancer Center - Indiana
- UPMC Cancer Center - Mount Pleasant
- UPMC Cancer Center - Natrona Heights
- UPMC Cancer Center - New Castle
- UPMC Cancer Center - Oakbrook Commons
- UPMC Cancer Center - Uniontown
- UPMC Cancer Center - Upper St. Clair
- UPMC Cancer Center - Washington
- UPMC Cancer Center - Wexford
- UPMC Cancer Center Monroeville - Haymaker
- UPMC Cancer Center at Beaver Medical Center
- UPMC Cancer Center at Jefferson Regional Medical Center
- UPMC Cancer Center at Jefferson Regional Medical Center
- UPMC Cancer Center at Magee-Womens Hospital
- UPMC Cancer Center at Mercy Hospital
- UPMC Cancer Center at Terarama Cancer Center
- UPMC Cancer Center at UPMC McKeesport
- UPMC Cancer Center at UPMC Northwest
- UPMC Cancer Center at UPMC Passavant
- UPMC Cancer Center at UPMC Presbyterian
- UPMC Cancer Center at UPMC Presbyterian
- UPMC Cancer Center at UPMC St. Margaret
- UPMC Cancer Center at the John P. Murtha Pavilion
- UPMC Horizon - Greenville
- UPMC Liver Cancer Center
- URO-TIP Urological Diagnosis Center
- US Biotest, Incorporated
- US Oncology - Arkansas Oncology Associates - Russellville
- US Oncology - Dayton Oncology-Hematology Consultants
- US Oncology - Lauderhill Lakes
- US Oncology - Triad Hematology-Oncology
- US Oncology, Incorporated - Central Office
- US Oncology, Incorporated - Dallas
- US Oncology, Incorporated - Houston
- USA Medical Center
- USAMRMC
- USC Head and Neck Associates
- USC/Norris Comprehensive Cancer Center and Hospital
- USF Physician's Group
- UT Bowld Hospital
- UT Southwestern Center for Breast Care
- UT Southwestern University Hospital - Zale Lipshy
- UVMC Cancer Care Center at Upper Valley Medical Center
- UW Cancer Center Johnson Creek
- UW Health Urology
- Uddevalla Hospital
- Uganda Cancer Institute
- Ukrainian Medical Stomatological Academy
- Ukrainian Research Institute of Endocrinology & Metabolism
- Ullevaal University Hospital
- Ulsan University Hospital
- Ulster Hospital
- Ultra-Med Research
- Uludag University Medical College
- Ulyanovsk Regional Oncology Center
- Umanis
