I found these opportunities online. Also discussed with dean and the advisor of AMCP for managed care opportunity. I know I was very lucky to be able to do two unique internships. I cannot say enough how much of an impact these experiences have had on my professional life. These internships always came up in residency and even post-residency job interviews.
With that being said, I also did a 12-week community pharmacy internship after P1 year. This was also a good experience, in part because I worked to make it a good experience. I definitely sought out more than what was required, did pharmacy manager training, worked with the store manager, did MTM, etc. Most internships (and really most jobs) are all about what you make of them.
Don't forget - an internship is like a really long job interview. Use that to your advantage!