DAWN MARIE DE CASTRO-MARCEAU, M.D. appears in the CMS NPPES registry as a Ophthalmology Physician provider holding M.D. credentials at 8701 CUYAMACA ST, SANTEE, CA, 92071, with a listed phone of (619) 568-8220. NPI 1629275912 was issued on 06/29/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DE CASTRO-MARCEAU 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 430 prescription claims written by this provider, covering 201 Medicare beneficiaries and totaling roughly $25K in drug spend, split 7% brand-name and 93% generic by claim count, with an opioid prescribing rate of 14.7%. 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 73.6207/100 for the 2023 performance year (Quality 74.5653, Cost 58.6993), compared with the national average of 83.1.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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.