KATERYNA FEYCHER, NP appears in the CMS NPPES registry as a Acute Care Nurse Practitioner provider holding NP credentials at 4600 W LOOMIS RD STE 101, GREENFIELD, WI, 53220, with a listed phone of (414) 488-1818. NPI 1184388084 was issued on 10/26/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FEYCHER 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 126 prescription claims written by this provider, covering 55 Medicare beneficiaries and totaling roughly $5K in drug spend, with an opioid prescribing rate of 19.0%. 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.

Acute Care Nurse Practitioner is a mid-sized specialty nationwide, with 24,583 enrolled providers across 53 states and an average of 576 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.