Joshua Ammerman, M.D. appears in the CMS NPPES registry as a Neurological Surgery Physician provider holding M.D. credentials at 3301 NEW MEXICO AVE NW, Washington, DC, 20016, with a listed phone of (202) 966-6300. NPI 1043361124 was issued on 01/15/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Ammerman 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 196 prescription claims written by this provider, covering 66 Medicare beneficiaries and totaling roughly $6K in drug spend, with an opioid prescribing rate of 12.2%. 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 20.8/100 for the 2023 performance year (Quality 0, Cost 69.2), compared with the national average of 83.1.

Neurological Surgery Physician is a mid-sized specialty nationwide, with 8,100 enrolled providers across 53 states and an average of 181 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.