Search on "Item Number 31" (without the quotes) here:
http://www.nucc.org/%5Cimages%5Cstories%5CPDF%5C1500_claim_form_instruction_manual_2012_02.pdfEnter the legal signature of the practitioner or supplier, signature of the practitioner or supplier representative, “Signature on File,” or “SOF.”
Search on "31" (without the quotes) here:
http://www.anthem.com/provider/me/f5/s2/t0/pw_041940.pdfSignature of Physician or Supplier Including Degrees or CredentialsThe signature of the physician or clinician who performed the services on the claim.
• If a group practice name appears in Box 33, the name of the physician who
performed the services must appear in Box 31.
• If the clinician who performed the services is a non-recognized professional (not
eligible to contract with us directly, i.e., physician’s assistant or certified nurse
anesthetist), the name of the attending, supervising or medically directing
physician must be entered here. The credentials
must be included along with the
clinician’s name.
• Do not enter the name of a billing clerk or supervisor.
Note: It is appropriate to indicate the names of PAFAs or RNFAs in Box 31 as they
are eligible to contract with us.