The various organizations, programs, and websites listed below provide additional resources that support Health IT adoption. Office of the National Coordinator for Health IT (ONC) ONC Health IT Playbook EHR Contract Guide Centers for Medicare and Medicaid Services (CMS) Massachusetts Executive Office of Health and Human Services (EOHHS) MassHealth (Medicaid) Health IT Council Health Information Management Systems Society (HIMSS) American Health Information Management Association (AHIMA) Massachusetts Medical Society (MMS) Massachusetts Health and Hospital Association (MHA) Promoting Interoperability Programs National Plan and Provider Enumeration Systems (NPPES) Medicare Provider Enrollment, Chain, and Ownership System (PECOS) Certified Health IT Product List (CHPL)