Maria Sandra Umali, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 22621 LYONS AVE, Newhall, CA, 91321, with a listed phone of (661) 964-0597. NPI 1790817328 was issued on 03/09/2007.

Medicare Part D records for calendar year 2023 show 4,538 prescription claims written by this provider, covering 337 Medicare beneficiaries and totaling roughly $326K in drug spend, split 9% brand-name and 90% generic by claim count, with an opioid prescribing rate of 0.7%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 19.5/100 for the 2023 performance year (Quality 0, Cost 65), compared with the national average of 83.1.

Gastroenterology Physician is a mid-sized specialty nationwide, with 16,601 enrolled providers across 54 states and an average of 833 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.