Courtesy of Professor Schwitzgebel.  Do note the counting principles:  for example, the list includes only authors born since 1900 and, more importantly, each author is only counted once per entry (even if, e.g., the author has six or seven entries in the bibliography).   Obviously the distribution of SEP topics affects the results, as Professor Schwitzgebel notes (a lot of philosophy of mind and philosophy of religion and feminist philosophy entries, for example).

ADDENDUM:  Using the Schwitzgebel method, I clock in at 22, which should put me in the top 400.  What a relief!  (Amusingly, it does make me the second most-cited non-emeritus philosopher on SEP here at Chicago, after Martha Nussbaum [who is near the very top of the whole list, of course] and in a tie with Jonathan Lear.)