The agency sent letters to Novo Nordisk, AstraZeneca, Boehringer Ingelheim, Covis Pharma, GlaxoSmithKline, Novartis, Teva Pharmaceuticals, among others.
Walmart said clinics are not a sustainable business model due to a challenging reimbursement environment for primary care and increasing operating costs.
The decision is another win for the Biden administration in a bitter legal fight with several drugmakers over the constitutionality of the price talks.
Nearly 30 pharmacy staff at the Las Vegas branch of CVS's Omnicare will now join The Pharmacy Guild, which will represent them in labor negotiations with CVS.
Among the company's investments to "transform" its specialty pharmacy services is the opening of a new facility dedicated to cell and gene therapy services.