CHARITY GRANNIS, M.D. appears in the CMS NPPES registry as a Pediatric Ophthalmology and Strabismus Specialist Physician provider holding M.D. credentials at 2855 GRAMERCY ST, HOUSTON, TX, 77025, with a listed phone of (713) 668-6828. NPI 1629380977 was issued on 07/01/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GRANNIS 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 280 prescription claims written by this provider, covering 95 Medicare beneficiaries and totaling roughly $26K in drug spend, split 43% brand-name and 57% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 93.4221/100 for the 2023 performance year (Quality 98.1464, Cost 81.472), compared with the national average of 83.1.

Pediatric Ophthalmology and Strabismus Specialist Physician is a narrow specialty nationwide, with 242 enrolled providers across 40 states and an average of 266 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.