PrepMod: Washington State's Mass Vaccination System

​​PrepMod is a web-based software application that manages key aspects of vaccination scheduling and reporting efforts in conjunction with the Washington State Immunization Information System (WAIIS).

However, it's not a good fit for every organization. Review our program requirements to see if this system will work for you PrepMod Use Case Scenarios (PDF).

To get more information or register to use the PrepMod system, please contact us at with a brief description of your inquiry in the subject line.

PrepMod Childhood Clinics Are Here!

The PrepMod program has partnered with Office of Immunization Childhood and Adult Vaccine Programs to provide pediatric and vaccination products in addition to COVID, Flu and Monkeypox.

All non-DOH PrepMod users will now need a SAW account to log into the system. Please ensure your SAW account is up to date or obtain a SAW account as soon as possible. Follow these instructions for obtaining or updating your SAW account. Use these PrepMod Enterprise Logging In Instructions for assistance with logging into PrepMod.

Reach out to the DOH PrepMod team with questions at

PrepMod Access

Once you are approved to use PrepMod, you can access the PrepMod website at:

If you experience delays or errors when trying to get a two-step authentication code by text message for the PrepMod Production site, please try using your email address to receive the authentication code. If you still experience problems accessing the site, please email our PrepMod team at If you need further technical support, please call the PrepMod Help Desk at 888-897-9595 or email

Training Materials

Washington State Immunization Information System (WAIIS) Training Materials


Technical Support