Kevin Counihan, the former head of the federal HealthCare.gov insurance exchange, has joined Centene, Vox reports. He will oversee Centene's health plans in the Midwest.

Why it matters: Counihan was an important Obama administration official — HealthCare.gov serves as the individual health insurance hub for 39 states that did not set up their own exchange. And now he's moving to Centene, which is mostly known for its Medicaid plans but has also embraced the ACA markets and is making a profit on those plans.