Computerized Provider Order Entry (CPOE) has been demonstrated to improve the medication ordering process, but most published studies have been performed at academic hospitals. Little is known about the effects of CPOE at community hospitals. With a pre-post study design, we assessed the effects of a CPOE system on the medication ordering process at both a community and university hospital. The time from provider ordering to pharmacist verification decreased by two hours with CPOE at the community hospital (p<0.0001) and by one hour at the university hospital (p<0.0001). The rate of medication clarifications requiring signature was 2.80 percent pre-CPOE and 0.40 percent with CPOE (p<0.0001) at the community hospital. The university hospital was 2.76 percent pre-CPOE and 0.46 percent with CPOE (p<0.0001). CPOE improved medication order processing at both community and university hospitals. These findings add to the limited literature on CPOE in community hospitals.