MARK ALLEN, D.O. appears in the CMS NPPES registry as a Adult Reconstructive Orthopaedic Surgery Physician provider holding D.O. credentials at 3591 S MERCY RD STE 204, GILBERT, AZ, 85297, with a listed phone of (866) 974-2673. NPI 1124339676 was issued on 06/30/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ALLEN 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 470 prescription claims written by this provider, covering 161 Medicare beneficiaries and totaling roughly $20K in drug spend, split 2% brand-name and 98% generic by claim count, with an opioid prescribing rate of 47.2%. 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 60.9499/100 for the 2023 performance year (Quality 52.1148, Cost 45.218), compared with the national average of 83.1.

Adult Reconstructive Orthopaedic Surgery Physician is a narrow specialty nationwide, with 1,245 enrolled providers across 51 states and an average of 493 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.