Cigna Corp. and Priority Health on Monday said...

...they have formed a strategic alliance to offer a more comprehensive provider network to Michigan employer groups. Beginning January 1, 2021, Cigna's employer groups will have access to Priority Health’s provider network, and Priority Health’s members will be able to use Cigna's network when travelling outside of the Priority Health service area. Priority Health is currently the second-largest insurer in Michigan, with 842,565 members. Just over 40% of its members are enrolled in a group risk plan. Cigna currently serves 120,639 members in Michigan, with 6,456 enrolled in a group risk plan.

From AIS’s Directory of Health Plans