MARY MALECEK, MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at 3015 N BALLAS RD, SAINT LOUIS, MO, 63131, with a listed phone of (314) 996-5151. NPI 1144647355 was issued on 03/25/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MALECEK 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 1,564 prescription claims written by this provider, covering 221 Medicare beneficiaries and totaling roughly $5.0 million in drug spend, with an opioid prescribing rate of 7.2%. 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 82.1095/100 for the 2023 performance year (Quality 82.147, Cost 74.2341), compared with the national average of 83.1.

Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,215 enrolled providers across 54 states and an average of 847 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.