no. most of the programs i am looking at say 3 so its not up to 4 even if eras generically says that. a couple said min of 3 or 3-4 for me when i checked their websites. some even stated that they wanted the letters from clinicians only or clinicians in my intended specialty (one of my letters is from a leadership position that i held for a well known organization and is not from a clinician).
so its better to look at the program website to see if they have specific instructions. yeah, its a pain but u're looking at the websites to decide which programs u want to apply to, right?
also on freida, if u click on the school and they put in the info that u see various tabs - click on "general information" under the school and one of the categories listed is "required LORs" and the number should be listed there.
worse comes to worse, u can email the school. i've heard that some programs don't like it (when i was on rotation at a very competitive school) if they ask for 3 and u send 4 b/c it looks like u either can't read directions or didn't take the time to do so, esp when they really don't want to read another letter and may choose to randomly throw one of yours out (and it might've been the best one so if u send how many they ask for, u can choose the LORs u think will be the best).