Perfect- that's very helpful!
The summer funded (presumably) Fellowship could be listed under Honors/Awards, but could be just as easily kept in the same space with the experience itself, with the choice being made depending on space limitations. The same goes for the stipended NIH IRTA experience. My personal preference would be to keep it with the Research space, if possible, to keep the context clear.
Schools that are aiming to train primary care docs may have concerns about an application that reflects significant research focus, thinking you might be less likely to attend their school, so why waste resources interviewing you. Or maybe not. But you should think about whether you want to deflect that concern. Either by de-emphasizing research on your application (maybe using the Employment tag for the MM entry, rather than Research, as you will for the other, or no MM space. And possibly by excluding posters you didn't personally present or that took place on campus), or by having a very good Secondary essay about how you'd blend your research interest with primary care (which can be done) for relevant schools with appropriate essay prompts. As Urban Health Programs exist that encourage getting a PH masters, the latter approach would be beneficial if that's what you are looking for. Alternatively, you might avoid including schools that don't have a phrase supporting research in their Mission Statement.
I think your approach is fine, but maybe try to use the word "publication" in the name you give the activity, besides the general topic of the research. And cite the pub or give the PubMed ID#.
You can use a lot of leeway in the naming process: Undergrad Entomology Research, Poster, & (name of journal if well-known and the characters fit) Publication. You get about 63 spaces total.
