In 2016 - 2018 the number of visits to 6 poles including general surgery poly, echocardiography, eye poly, internal medicine, ENT poly, poly urology fluctuated from 11.23% to -5.23%. Fluctuations in the number of visits can be caused by several factors, one of which is consumer behavior in health service selection decisions. This study aims to determine the effect of the marketing mix on service selection decisions.This research is an analytic survey research with cross sectional approach. The population in this study were patients in 6 outpatient clinics at Jemursari Islamic Hospital in Surabaya