Months into a new Biden administration policy intended to lower drug costs for Medicare patients, independent pharmacists say they’re struggling to afford to keep some prescription drugs in stock. “It would not matter if the governor himself walked in and said, ‘I need to get this prescription filled,’” said Clint Hopkins, a pharmacist and co-owner of Pucci’s Pharmacy in Sacramento, California. “If I’m losing money on it, it’s a no.” A regulation that took effect in January changes prescription prices for Medicare beneficiaries. For years, prices included pharmacy performance incentives, possi…