REBECCA HUMMER, NP-C appears in the CMS NPPES registry as a Oncology Registered Nurse provider holding NP-C credentials at 6296 E GRANT RD STE 140, TUCSON, AZ, 85712, with a listed phone of (520) 298-3321. NPI 1770003253 was issued on 06/26/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HUMMER 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 177 prescription claims written by this provider, covering 79 Medicare beneficiaries and totaling roughly $48K in drug spend, split 31% brand-name and 69% generic by claim count. 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 Registered Nurse is a narrow specialty nationwide, with 857 enrolled providers across 50 states and an average of 555 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.