THOMAS JAN, D.O. appears in the CMS NPPES registry as a Neuromusculoskeletal Medicine & OMM Physician provider holding D.O. credentials at 4200 SUNRISE HWY, MASSAPEQUA, NY, 11758, with a listed phone of (516) 541-1064. NPI 1871685404 was issued on 09/29/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what JAN 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 2,011 prescription claims written by this provider, covering 233 Medicare beneficiaries and totaling roughly $345K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 38.3%. 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.

Neuromusculoskeletal Medicine & OMM Physician is a narrow specialty nationwide, with 1,235 enrolled providers across 51 states and an average of 1,107 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.