MARVIN CHANG, MD appears in the CMS NPPES registry as a Pain Medicine Physician provider holding MD credentials at 16605 SOUTHWEST FWY STE 550, SUGAR LAND, TX, 77479, with a listed phone of (281) 201-8818. NPI 1518910769 was issued on 05/18/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHANG 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 6,085 prescription claims written by this provider, covering 632 Medicare beneficiaries and totaling roughly $310K in drug spend, split 5% brand-name and 95% generic by claim count, with an opioid prescribing rate of 45.7%. 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 86.6175/100 for the 2023 performance year (Quality 76.7592), compared with the national average of 83.1.

Pain Medicine Physician is a narrow specialty nationwide, with 951 enrolled providers across 49 states and an average of 2,078 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.