Is api.pdws.aamc.org a scam? More than that, it's unclear whether this subdomain is even meant to be visited. When you try to load the site, you get a 404 error — the page simply doesn't exist. That's unusual for any legitimate service, especially one tied to a well-known organization like the AAMC.
A real, working subdomain would normally have some transparency: a contact page, terms of use, or at least evidence of who operates it. Here, there's none. The SSL certificate is valid and the hosting is on Amazon Web Services, but that doesn't outweigh the fact that the site doesn't load.
If you were considering api.pdws.aamc.org reviews to decide whether to use this API, the lack of any functional interface or documentation should give you serious pause. Without proof that it's actively maintained or even intended for public use, it's best to treat this as a non-entity until proven otherwise.