ERNESTO ALONSO, MD appears in the CMS NPPES registry as a General Practice Physician provider holding MD credentials at 4241 NW AMERICAN LN, LAKE CITY, FL, 32055, with a listed phone of (386) 288-5311. NPI 1396170601 was issued on 09/05/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ALONSO most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 5,239 prescription claims written by this provider, covering 829 Medicare beneficiaries and totaling roughly $2.7 million in drug spend, split 17% brand-name and 83% generic by claim count, with an opioid prescribing rate of 0.5%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 76.2283/100 for the 2023 performance year (Quality 62.7479, Cost 54.1876), compared with the national average of 83.1.

General Practice Physician is a mid-sized specialty nationwide, with 16,677 enrolled providers across 56 states and an average of 2,872 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.