JENNIFER VANLEEUWEN, APRN/CNS appears in the CMS NPPES registry as a Oncology Clinical Nurse Specialist provider holding APRN/CNS credentials at 9100 W 74TH ST, MERRIAM, KS, 66204, with a listed phone of (913) 632-9100. NPI 1215339965 was issued on 09/24/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what VANLEEUWEN 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 192 prescription claims written by this provider, covering 76 Medicare beneficiaries and totaling roughly $215K in drug spend, split 16% brand-name and 84% generic by claim count, with an opioid prescribing rate of 21.4%. 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.

Oncology Clinical Nurse Specialist is a narrow specialty nationwide, with 209 enrolled providers across 38 states and an average of 435 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.