AMBER MCMILLIN, FNP-C MSN appears in the CMS NPPES registry as a Nurse Practitioner provider holding FNP-C MSN credentials at 640 FLORMANN ST, RAPID CITY, SD, 57701, with a listed phone of (605) 755-3300. NPI 1619373347 was issued on 11/06/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MCMILLIN 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 3,303 prescription claims written by this provider, covering 385 Medicare beneficiaries and totaling roughly $329K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 4.4%. 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 97.5814/100 for the 2023 performance year (Quality 86.5348), compared with the national average of 83.1.

Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 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.