JI-SUK YOO, D.O. appears in the CMS NPPES registry as a Student in an Organized Health Care Education/Training Program provider holding D.O. credentials at 580 SAINT JOHNSBURY RD STE B, LITTLETON, NH, 03561, with a listed phone of (603) 308-1472. NPI 1275890964 was issued on 04/18/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what YOO 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 54 prescription claims written by this provider, covering 15 Medicare beneficiaries and totaling roughly $433 in drug spend, with an opioid prescribing rate of 29.6%. 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 73.2773/100 for the 2023 performance year (Quality 44.8928, Cost 47.6995), compared with the national average of 83.1.

Student in an Organized Health Care Education/Training Program is a high-volume specialty nationwide, with 331,761 enrolled providers across 55 states and an average of 459 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.