SSM Health Express Clinic at WalgreensSSM Health Express Clinic at WalgreensSSM Health is a Catholic, not-for-profit health system serving the comprehensive health needs of communities across the Midwest through a robust and fully integrated health care delivery system.https://www.ssmhealth.com › resources › aboutAbout Us | SSM Health accepts most major insurance plans as well as major credit cards and cash. ... SSM Health Express Clinic at Walgreens accepts most major insurance plans, including Medicare and Medicaid. If you have insurance, a hard copy of your insurance card is required at the time of service.