Final answer:
For a group practice, the correct entry in the designated block of a claim is the Practice's EIN, as it identifies the practice rather than an individual provider.c) Practice's EIN
Step-by-step explanation:
When completing claims for a group practice, the correct information to enter in the designated block is c) Practice's EIN (Employer Identification Number). This is because for billing and tax purposes, the group practice's identification is used rather than an individual provider's Social Security Number (SSN) or Employer Identification Number (EIN). The Practice's EIN is a unique identification number for the entire practice, whereas individual providers within the practice may have personal EINs or use their SSNs for other purposes.