I considered a couple accelerated MD programs while I was in high school, so I know of some. However, I don't think that finishing your MD in less than 8 years is necessarily an advantage. My uncle did a 6-year program at either University of Missouri-Kansas City or Columbia, but my mom told me that all he did was eat, sleep, breathe studying. You don't get summer breaks because the program is so condensed, and it sounded to me like he was stressed 24/7. There is really no rush, so you might as well enjoy your full college experience before continuing on to medical school.
With that said, Northwestern has a 7-year program that includes automatic admission to their medical school if accepted. They only select maybe 30 people, so it's very competitive. I assume UMKC or Mizzou also has a similar program since my uncle did that, but I never looked into it. If you are interested in a program that includes automatic admissions to medical school, Rice University is partnered with Baylor. Their program is not accelerated, but it's guaranteed admission with no MCAT needed.