- Horizon Health Care, Inc.
- Horizon Healthcare Technologies
- Horizon Home Care
- Horn Memorial Hospital
- Horseshoe Tunica Casino
- HOSA
- HOSA at Liberty High School
- Hospice of Arizona
- Hospice of the Florida Suncoast
- Hospice Services of Reno
- Hospital and Healthcare Compensation Service
- Hospital Bella Vista
- Hospital Centro Comprensivo de Cancer Hector Jose Ferrer Rios
- Hospital Comunitario Buen Samaritano
- Hospital Council of Western Pennsylvania
- Hospital Damas Inc.
- Hospital de la Concepcion
- Hospital de la Universidad de Puerto Rico Dr. Federico Trilla
- Hospital Dr. Cayetano Coll Y Toste
- Hospital Dr. Moniquez, Inc
- Hospital Episcopal San Lucas Metro
- Hospital Episcopal San Lucas Ponce
- Hospital Español Auxilio Mutuo de Puerto Rico
- Hospital General Castañer
- Hospital General Menonita Aibonito
- Hospital General Menonita Caguas
- Hospital General Menonita Guayama
- Hospital Lafayette
- Hospital Menonita Humacao
- Hospital Metropolitano de la Montana
- Hospital Metropolitano de Rio Piedras
- Hospital Metropolitano Dr. Pila
- Hospital Metropolitano Dr. Susoni
- Hospital Metropolitano Psiquiatrico Cabo Rojo
- Hospital Metropolitano Southwest Health Corporation
- Hospital Municipal De La Capital
- Hospital Municipal de San Juan
- Hospital of the University of Pennsylvania
- Hospital Oncologico Dr. I. Gonzalez
- Hospital Oriente
- Hospital Pavia Arecibo
- Hospital Pavia Caguas
- Hospital Pavia Hato Rey
- Hospital Pavia Santurce
- Hospital Pavia Yauco
- Hospital Perea Mayaguez
- Hospital San Antonio
- Hospital San Carlos Borromeo
- Hospital San Cristobal
- Hospital San Francisco