Data.medicare.gov API

Hi, sorry I’m very new to this whole API thing, followed the RASA masterclass on youtube and the API was gotten from this website: data.medicare.gov . However, now this website does not look the same as the video (https://www.youtube.com/watch?v=9POI7LiKH_8&t=309s, 3:56), and when I try to look for the API, it does not look like what was shown in the video as well. Is there anywhere I can get a database that looks similar to what was shown in the video so that i can follow through it? If not, is there a way to get that same API from the website now?

Would appreciate your help on this, thanks!