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NPI Type 1 vs Type 2 for therapists — which goes on a superbill?

Every clinician needs a Type 1 NPI. Whether you also need a Type 2 depends on how your practice is structured — and superbills may show one or both.

Illustrated practice workflow: calendar, parent updates, payments

The two NPI types

Which goes on the superbill?

Solo practitioners billing under their own SSN or personal EIN typically list only their Type 1 NPI as the rendering and billing provider. If you formed an entity and payments flow to the business, list the Type 2 as the billing provider and the Type 1 as the rendering provider — the same structure a CMS-1500 uses.

Group practices always pair them: the group's Type 2 plus each treating clinician's Type 1 on their lines. Families' OON claims process more smoothly when both appear.

Getting a Type 2

  1. Step 1

    Form the entity first

    You need the legal business name and EIN before applying.

  2. Step 2

    Apply at NPPES

    Same portal as Type 1 — select organization, enter the EIN, and designate an authorized official. It is free and usually issued within days.

  3. Step 3

    Keep both active

    Update addresses in NPPES when you move; stale NPI records cause claim mismatches years later.

FAQ

Can I keep billing with just a Type 1 after forming an LLC?

Many solo owners do, listing the entity's EIN as the tax ID with their individual NPI. Payer credentialing may eventually require the Type 2 — getting one early is free and avoids re-papering later.

Does the free superbill tool support both NPIs?

The generator includes provider NPI and tax ID fields formatted the way payers expect — list your rendering NPI and the tax ID your practice bills under.

More practice guides

Educational content only — not billing, legal, or tax advice. Verify payer policies and regulations for your state and situation.