So, I am a current MSI at Umass, so I just went through all of this.
The most important thing to remember about Umass is to be respectful to EVERY single person who you encounter. Adcom members routinely walk around and talk to interviewees to see how they interact with people.
For the actual interview, however, make sure you are at least somewhat informed about healthcare and the current politics. Not every interviewer will ask you about this, but there are a few who will ask you how to make healthcare better. Also, be sure to do some research about the upcoming things at Umass (i.e. the new Albert Sherman Building) and formulate some questions about these things to ask your interviewer. Other than that, Umass is really chill and they do everything to make sure you feel comfortable on the day of the interview. When I had my interview here, everyone was extremely welcoming and encouraging.
After your interview, make sure you send thank you letters to the admissions office for each of your interviewers. Do not get discouraged about not hearing anything right away. I interviewed in September and was accepted in April. I was not waitlisted, so I literally had to suffer that long.
By the way, if you do get accepted, we have a orientation camping trip to Maine in early August. We call this MOE. It is by far the best experience ever and no other medical school has anything quite like it!
