On Assignment HIM (Health Information Management) is a leading provider of contract and Direct Hire coding and auditing professionals. Divisions include: On Assignment Health Information Management, On Assignment Healthcare Staffing, On Assignment Allied Travel, On Assignment Nurse Travel, On Assignment Lab Support US, UK, The Netherlands, Belgium and Ireland, On Assignment Clinical Research, On Assignment Engineering, Oxford Global Resources(IT and Engineering), and VISTA Staffing Solutions (Locum Tenens and Physician Search).