Medical device manufacturers
Companies
200 medical device manufacturers, with every FDA spelling of each name resolved to one company. 141 of them are published by FDA under more than one spelling, so a search for any single one would undercount them.
All companies, by how much they file
A company gets a page once it holds at least 20 clearances. Every one of the 50,000-odd firms in FDA's data could have one, but a page reading "1 clearance, no recalls" tells a reader nothing and makes the useful pages harder to find.