Reader Question: Understand These NPI Basics For New Providers

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Note:  The following article synopsis was NOT provided by AAPC. It was created by Find-A-Code/innoviHealth.

Article Overview

This reader Q&A explains general billing and compliance considerations for a new provider who is not yet credentialed to bill Medicare or other payers. It focuses on why the timing of NPI and credentialing matters, how practices should think about claims submitted during the transition period, and the role of Medicare guidance and locum tenens concepts in that context.

Why This Topic Matters

The topic is important for practices onboarding new clinicians because early billing decisions can create compliance risk if claims are submitted before enrollment or credentialing requirements are satisfied. It also helps administrators, billers, and compliance staff understand the general framework surrounding claims submission for new providers.

Article Sections

  1. Question

    Introduces a practice scenario involving a newly hired provider, credentialing status, and questions about how services may be billed during the onboarding period.

  2. Answer

    Addresses the compliance and billing concerns raised by the scenario and discusses the general appropriateness of billing under another provider’s identifier.

  3. Solution

    Outlines broad options for handling patient visits while the new provider’s enrollment or credentialing is pending.

  4. Remember

    Highlights a general caution about reporting services under an existing physician’s identifier in combination with locum tenens terminology.

  5. Here’s why

    Provides general context on the meaning of locum tenens and references Medicare guidance relevant to covering physicians.

What You Will Learn

  • How credentialing status can affect billing for a newly hired provider
  • Why Medicare and payer enrollment timing matters for claims submission
  • What locum tenens generally refers to in a billing context
  • How compliance concerns arise when a practice bills services under another clinician’s identifier

Who Should Read This

  • Medical practice administrators
  • Coders and billers
  • Compliance staff
  • Healthcare revenue cycle teams
  • Physician office managers

Modifiers Discussed


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