LILI REN, M.D. appears in the CMS NPPES registry as a Legal Medicine provider holding M.D. credentials at 13421 MAPLE AVE FL 1, FLUSHING, NY, 11355, with a listed phone of (718) 886-5253. NPI 1043543069 was issued on 09/09/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what REN 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 22,893 prescription claims written by this provider, covering 446 Medicare beneficiaries and totaling roughly $2.7 million in drug spend, split 15% brand-name and 85% 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.

Legal Medicine is a narrow specialty nationwide, with 1,067 enrolled providers across 51 states and an average of 2,821 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.