JOHN NELLIGAN, MD appears in the CMS NPPES registry as a Sports Medicine (Orthopaedic Surgery) Physician provider holding MD credentials at 680 GUZZI LN STE 102, SONORA, CA, 95370, with a listed phone of (209) 536-5780. NPI 1952491151 was issued on 10/16/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NELLIGAN 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 484 prescription claims written by this provider, covering 151 Medicare beneficiaries and totaling roughly $7K in drug spend, with an opioid prescribing rate of 60.5%. 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 79.2264/100 for the 2023 performance year (Quality 86.143, Cost 47.1116), compared with the national average of 83.1.

Sports Medicine (Orthopaedic Surgery) Physician is a narrow specialty nationwide, with 2,681 enrolled providers across 53 states and an average of 278 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.