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Cigna Has Failed to Comply With Insulin-Cost Probe, Senators Say

The myCigna application on an iPhone.
Photographer: Andrew Harrer/Bloomberg

Senators Chuck Grassley and Ron Wyden threatened Cigna Corp.’s Express Scripts business with a subpoena after the lawmakers said the pharmacy-benefit manager failed to comply with an investigation of rising insulin costs.

Grassley, the Republican chairman of the Senate Finance Committee, and Wyden, the panel’s top Democrat, sent a letter to Express Scripts President Timothy Wentworth on Feb. 25, saying the company “failed to even attempt to answer” questions posed to it in April 2019. The senators are seeking information about how Express Scripts chose which insulin medications to cover and rebates it has negotiated with drugmakers.