Medicare takedown includes 4 EMS, 2 home health care operators Houston Chronicle Copyright 2012 Houston Chronicle. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Updated 12:10 p.m., Wednesday, May 2, 2012 The arrests, made by investigators with the U.S. Department of Health and Human Services' Office of Inspector General and FBI agents included operators of four Houston private ambulance companies responsible for $7 million in phony trips to an outpatient psychiatric clinic.