Cardinal Health has announced a definitive agreement to purchase Healthcare Solutions Holding LLC in a $517m all-cash transaction.

The agreement also includes the opportunity for earn-out payments of up to $150m over the next three years.

Healthcare Solutions Holding is the parent company of a number of subsidiaries, including P4 Pathways and P4 Healthcare, which provide patient healthcare tools, services and data.

Cardinal Health chairman and chief executive officer George Barrett said that the acquisition is an important building block to create a differentiated set of services for oncology and specialty customers.

Subject to the satisfaction of customary closing conditions and regulatory clearance, the transaction is expected to close early in Cardinal Health’s 2011 fiscal year, beginning on 1 July.