In order to qualify for the GS-13, you must meet the following: You must demonstrate in your resume at least one year (52 weeks) of qualifying specialized experience equivalent to the GS-12 grade level in the Federal government, obtained in either the private or public sector, to include: Providing support to improper payment measurement contractors on Medicare Fee-for-Service (FFS) policies and requirements; AND, Communicating to the public or medical professionals on the coverage policies related to the items and services that are eligible for payment under Medicare FFS rules; AND, Educating providers, beneficiaries, and stakeholders on compliance, billing, reporting, or other operational aspects of the Medicare FFS program; AND, Preparing briefing materials or reports, such as contributing to the Payment Integrity Report section of the annual Agency Financial Report (AFR) and compiling supplemental improper payment data for program oversight and transparency. As a Health Insurance Specialist, GS-0107-13, you will serve as the primary CMS focal point for functional administration and oversight of the Comprehensive Error Rate Testing (CERT) Program, and for internal and external reporting of CMSs Medicare FFS improper payment activities.