Walgreens says it's working to increase awareness of preventive services available under Medicare by distributing information in nearly 8,000 pharmacies and more than 360 Take Care Clinic locations, as well as using in-store announcements and providing this information as part of its "Walgreens Way to Well Health Tour with AARP."

"With a Walgreens pharmacy within three miles of nearly two-thirds of the U.S. population, we are well-positioned to not only inform Medicare beneficiaries of these new features, but also to provide access to these valuable health care services," says Debbie Garza, Walgreens divisional vice president of government relations.

Walgreens pharmacies offer Medicare patients a number of services including direct billing to Medicare Part B and D, administration of Medicare covered immunizations and prescription drug plan reviews by Walgreens pharmacists to help patients pick a plan that best fits their medication needs. The drugstore giant also offers Medicare preventive visits and yearly wellness visits.

According to the Centers for Medicare & Medicaid Services, only 6.5 percent of eligible seniors have used their Medicare wellness visit benefit. The benefit is available upon enrollment and then once a year with no out-of-pocket costs.