A primary care physician or managed care entity responsible for determining when and what services a patient can access and receive reimbursement for. A PCP is involved in overseeing and coordinating all aspects of a patient’s medical care. In order for a patient to receive a specialty care referral or hospital admission, the PCP must preauthorize the visit, unless there is an emergency. The term gatekeeper is also used in health care business to describe anyone (EAP, employer based casemanager, UR entity, etc.) which makes the decision of where a patient will recieve services.