Jonathan Blum, the principal deputy administrator for the Centers for Medicare & Medicaid Services (CMS), is resigning from his position effective May 16, according to various sources. He was responsible for coordinating CMS’ policy centers and offices to develop and execute strategies to improve payment and care delivery across the agency. From 2009-2013, Blum served as the CMS director, overseeing the regulation and payment of Medicare fee-for-service providers, privately administered Medicare health plans, and the Medicare prescription drug program. He led the implementation of many Medicare reforms, including the Medicare Shared Savings Program (Accountable Care Organizations), the Medicare Advantage Quality Bonus Program, competitive bidding for durable medical equipment, new bundled payment initiatives, and the Medicare prescription drug discount program. He also helped oversee the recently released detailed Medicare payment data for about 880,000 physicians.