Health insurer Aetna has completed the acquisition of New York-based Prodigy Health Group, an independent third party administrator of self-funded health care plans for big companies.

Aetna first announced the deal in April and said that the group will keep its current management and operating structure and compete under its own brands.

Prodigy Health Group operates in 15 states and has approximately 600,000 medical members, approximately 450,000 pharmacy members.

Aetna offers traditional, voluntary and consumer-directed health insurance products and related services, including medical, pharmacy, dental, behavioral health, group life and disability plans, and medical management capabilities and health care management services for Medicaid plans.