There are many players in this game. I will list the long time players and not the short timers. The guy who runs is most involved is Anthony Lee Miller. He is the most aggressive of the bunch in my opinion. His partner is Chuck Gebig. Chuck was the front man for PhysicianJobBoard for a while but also manages NurseCareerBoard and TherapistJobBoard. Karl Sander keeps the separation on the staffing side by only listing this site and not the job boards. It is important not to mix the two.
Another important player is Kathy Silverman. She is the sister of convicted felon and fraudster William Goldstein. She assumed ownership of several of his companies including StaffMD and RecruitingITServices in 2019 after they were sued for racketeering.
Eugenie Davis is the main straw man. She created many of the these companies in 2015-2016 to shield Goldstein from exposure and ultimate asset forfeiture when he was convicted in 2018. There is still on open, asset forfeiture case against them by the FBI. In July 2018, a federal court document mentioned Eugenie Davis by name as an asset for investigation into hiding assets for Goldstein. The status of the request to depose her is unknown.
StaffMD 