Interesting you should ask.
Maybe someone smarter than I can explain ...
FL medical board - Perper lists Washington DC as ‘other states of license’ or whatever the wording it.
If you check DC medical.. he doesn’t show up.
http://app.hpla.doh.dc.gov/weblookup/
https://ww2.doh.state.fl.us/irm00Profiling/profile.asp?LicId=56425&ProfNBR=1501&Lookup=TRUE
Other State Licensure
This practitioner has indicated the following additional state licensure:
State WASHINGTON, DC
Profession MEDICAL
State PENNSYLVANIA
Profession MEDICAL
And under Optional info tab.. he remembers to list every org or book etc.. but..
Profession:Medical Doctor
Year Began Practicing:Not Provided