Introduction: Indonesian Medical Doctor Internship Program, or internship, is a preregistration professional training program for medical school graduates in Indonesia. The candidates have to wait about six months to participate in the one-year internship program which is becoming mandatory for the application of medical license. By laws, medical practice by internship program candidates during internship waiting period (six months or more) is forbidden. In the context of sharia, some scholars considered these medical practices as haram. The study was first to investigate the medical practice preference during internship waiting period and the related factors.Method: 107 respondents were taken from Moslem doctors that passed national board exam. Religiosity was measured using adapted DUREL (Duke University Religion Index) questionnaire and reported as DUREL Score. University origin religion base (UORB); university origin funding source (UOFS); and pre-internship medical practice (pIMP) were asked using multiple choices questionnaires. All of the questionnaires were asked using google form. Then, Spearman correlation two-tailed test was conducted. The obtained significant variables tested in binomial logistic regression test. Result: DUREL score had a weak negative significant correlation to pIMP (r= -0.197; p<0.1), UORB had a weak positive significant correlation to pIMP (r= 0.295; p<0.1), and UOFS had an insignificant correlation to pIMP (p>0.1). The binomial logistic regression test showed that higher DUREL score led to lower preference in doing pIMP although UORB of Islam led to the opposite (OR=3.6 90%CI 1.85-7.35).Discussion: Religiosity seems to prevent pre-Internship doctors to do pIMP although the UORB predicts otherwise. However, the correlations of the variables are weak. A further study is needed to learn the motive of pIMP and bring the solution to the problem.International Journal of Human and Health Sciences Vol. 05 No. 01 January’21 Page: 50-54