Hobson has joined the South London Commissioning Support Unit (SLCSU), which provides support services to 15 clinical commissioning groups in south London and Surrey, as comms and engagement lead.
The organisation provides a range of services including financial and information governance, acute contract management and comms.
Hobson joins an expanded comms team of 13 and will report to SLCSU director of comms Oliver Lake.
He will work closely with Croydon Clinical Commissioning Group, which he said has historically had issues with finance.
He joined Open Road as associate director in November 2011, and was previously associate director at Insight Public Affairs, where he specialised in health and social care policy.
Open Road is believed to be in the final stages of recruiting for a replacement. Its healthcare practice is being managed by associate director Emma Hazelhurst and chief executive Graham McMillan in the interim.