This study will evaluate various performance metrics of emergency department operations after the implementation of computerized physician order entry in an academic emergency department.

The study will be a prospective before-after study comparing various operational and performance metrics before and after the implementation of a computerized physician order entry system in the emergency department.

The investigators will collect 6 month before, 6 month after of data along with a 2-4 week washout period. The investigators will also administer a computerized physician order entry survey after the study is completed. This confidential survey will be emailed to all ED nurses, residents, and attendings using RedCap. Consent will be implied if they choose to participate.

Inclusion Criteria:

• All consecutive adult patients (Age >=18) presenting to the Emergency Department during the study period will be included in the study.

Exclusion Criteria:

• Patients who eloped, left without being seen, or signed out against medical advice will be excluded.

All patients who are registered in the emergency department > 18 years of age who do not elope, left without being seen, or leave AMA.