Clark Howard urges caution on Costco's new Medicare Advantage products

Consumer advocate Clark Howard posted a warning on October 5, 2026, telling his followers to proceed with extreme caution around Costco's co-branded Medicare Advantage products. His post landed as Medicare open enrollment gets underway, when millions of seniors are actively comparing plan options.

Costco has built one of the most durable trust brands in American retail, and that reputation is precisely what makes this move worth watching closely. When the warehouse club lends its name to a financial or insurance product, members who associate the brand with value and reliability feel a stronger pull toward signing up than they otherwise would.

Howard's skepticism centers on that brand halo effect. Medicare Advantage plans can vary enormously in network coverage, out-of-pocket costs, and prior authorization requirements, and a familiar co-brand does not guarantee that the underlying plan terms are competitive or consumer-friendly.

For investors and shoppers alike, the question is whether Costco's entry into Medicare Advantage becomes a meaningful new revenue stream or a reputational risk if member experiences fall short of the trust the brand has spent decades building. Howard's warning is a signal that scrutiny of the product details is warranted before anyone enrolls, beyond the Costco name on the label.