Medicare Physician Payment Innovation Act of 2013

[AI summary unavailable — showing source text] Medicare Physician Payment Innovation Act of 2013 - Amends title XVIII (Medicare) of the Social Security Act (SSA) to revise requirements for payments for physician's services to eliminate the sustainable growth rate system from the formula for determination of the fee schedules for such services. Sets at 0.0 the 2014 update to the single conversion factor in such formula. Establishes updates for separate primary care and other service categories beginning January 1, 2015, as well as separate conversion factors and separate updates through 2018 for each service category. Directs the Secretary, through the Center for Medicare and Medicaid Innovation, to: (1) expand testing of each innovative payment and service delivery model in at least three geographic regions; and (2) include analysis of average implementation costs, per physician, in evaluations of models in phase 1 testing. Specifies as such a model, subject to testing, payment for outpatient therapy services and speech language pathology services on the basis of a treatment session, an episode of care, or other bundled payment methodology as a model to be tested during phase 1 testing. Directs the Comptroller General to study …