CAROL BALLWEG, APNP appears in the CMS NPPES registry as a Diabetes Educator Registered Nurse provider holding APNP credentials at 3051 CAHILL MAIN, FITCHBURG, WI, 53711, with a listed phone of (608) 661-7200. NPI 1609990381 was issued on 03/19/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BALLWEG 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 874 prescription claims written by this provider, covering 91 Medicare beneficiaries and totaling roughly $40K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 2.1%. 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 80.2217/100 for the 2023 performance year (Quality 85.0677, Cost 49.8379), compared with the national average of 83.1.

Diabetes Educator Registered Nurse is a narrow specialty nationwide, with 2,273 enrolled providers across 55 states and an average of 1,296 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.