Hotel Star-like quality rating for healthcare clinics GCR is a website that uses an analytical algorithm which provides an audit of any medical clinic and gives each clinic a quality score, which is a numerical value between 1 and 5. This "GCR Score" is used to rank clinics worldwide. For paid, certified clinics it shows key improvements to help improve the clinic, breaking down the facilities, expertise, service and aggregated review metrics of the clinic, to help understand the way the clinic appears to patients.