UMass Amherst Patient Portal Login. SHBP Waiver (Updated 7/26/21): To waive the SHBP, visit the Wellfleet website. COVID-19 Vaccine - Guidance for Students (Updated 7/28/21): Login to the UMass Patient Portal and click Immunization to submit your COVID-19 vaccine information to UMass.If you have a hold on your account, it will be removed within 5-7 business days after you submit your vaccine ....