COLLEEN GUMM, NP appears in the CMS NPPES registry as a Gerontology Registered Nurse provider holding NP credentials at 3902 E GRANT RD, TUCSON, AZ, 85712, with a listed phone of (520) 468-4801. NPI 1568485951 was issued on 07/26/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GUMM 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 5,098 prescription claims written by this provider, covering 467 Medicare beneficiaries and totaling roughly $443K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 1.9%. 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.

Gerontology Registered Nurse is a narrow specialty nationwide, with 749 enrolled providers across 48 states and an average of 1,721 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.