Before you start
Before you submit: Make sure the practice EIN/TIN, each clinician’s individual rendering NPI, the practice or claim-service address, and other practice details you give this plan exactly match the information in Thrizer. Use this guide for a required Anthem Local / Host Plan in Colorado, Connecticut, Georgia, Indiana, Kentucky, Maine, Missouri, Nevada, New Hampshire, New York, Ohio, Virginia, or Wisconsin. These markets document the same initial non-participating registration path. Other Blue companies in those states may use different processes. These state names do not mean Anthem serves every location within them. Anthem excludes 30 Kansas City-area counties in Missouri and lists Northern Virginia exceptions. Its July 2026 New York commercial provider manual lists 28 operating-area counties, some of which also appear on Highmark’s service-area map. Check the companies serving your practice or claim-service location; where both serve it, plan for separate registrations. If registration is incomplete, claims can be delayed. Not sure which plan applies? First identify your required Local / Host Plan. Registration is separate from joining a network. For California, use the separate Anthem Blue Cross California guide and complete the required Blue Shield of California registration too.Register through Availity Essentials
1
Sign in with access to your practice
Sign in to Availity Essentials. If your practice is new to Availity, create its organization account and designate an administrator. Ask that administrator to check your permissions if needed.An Availity account is access to the tool, not registration with Anthem.
2
Open Anthem's enrollment application
Select the applicable market and Payer Spaces, then the Anthem company for your service location. New York displays Anthem BC NY and Anthem BCBS NY as separate entries; confirm the applicable company with Anthem if your location does not make the choice clear. Under Applications, open Provider Enrollment and Network Management, or the newer label Enrollment, Registration, & Network Management. Follow your market’s current official instructions if the labels differ.
3
Choose the out-of-network option
Select Out-of-Network / Single Case Agreements. If the application instead shows Non-Participating Provider Registration, expand that section and select Begin New Registration. These newer labels were verified in both New York Anthem payer spaces, Ohio, Virginia, and Wisconsin; they do not establish that every market has identical screens. Registration does not itself request or approve prior authorization or a single-case agreement. Do not substitute Provider Enrollment - Join Our Network.
4
Register the practice and include its clinicians
Complete the required organization and individual-clinician information. Your practice coordinates the records and their associations; clinicians in a group are not establishing separate practices.Do not assume a bulk clinician-roster upload is available. The state articles do not establish that capability, and most say it is still in development. If the application does not let you associate your clinicians, use Chat with Payer in the Anthem payer space for the required steps.
5
Review and confirm the records
Review the application and documents before submitting. Keep the submission reference and ask Anthem to confirm that the practice and every required clinician affiliation are active, including effective dates and remaining steps. Retain that confirmation. Do not use network participation as a substitute if the out-of-network choice is missing.