CAQH is an acronym that represents the name of a national credentialing database, Council for Affordable Quality Healthcare, that stores provider credentialing information for all Ohio Medicaid providers. The CAQH database is a third-party system that the Ohio Department of Medicaid is utilizing to compile and store the credentialing information on behalf of the Medicaid Agency.
Medicaid providers of OT, PT, AUD and SLPs who complete referrals for MSP services are required to complete credentialing documentation in the CAQH database. This is in addition to applying and obtaining your National Provider Identifier (NPI) and Ohio Medicaid Legacy Number. You will set up a CAQH account and complete the information prior to or in conjunction with your initial Medicaid application and your 3-year Revalidation/Recredentialing (Medicaid will send an email to you when this is due). It is not required for you to attest to CAQH every 120 days, but it might be preferable for convenience.
You can find more information and/or begin the revalidation or recredentialing process here.