NPI number for registered nurses

Most staff RNs never need an NPI. Nurses who do are the ones whose name appears on a claim or order: home health and hospice case managers, infusion and aesthetic nurses who bill, school nurses in Medicaid billing programs, and anyone planning to become an NP.

Short answer: registered nurses need an NPI when a payer, platform or employer puts them on a claim. The NPI is free, takes minutes, and lasts for life. SimpleNPI files it for you for free, usually within 10 minutes, or you can apply yourself at NPPES. Check the free lookup first in case you already have one.

Who asks registered nurses for an NPI

Home health, hospice and Medicaid programs: Some state Medicaid programs and agencies list the RN as the rendering or ordering provider.
Aesthetic, infusion and independent nursing practices: A nurse who bills a payer or writes superbills needs the NPI on them.
Employers: Some hospitals and staffing agencies ask every clinician for an NPI for credentialing files.
Future NP enrollment: Getting the NPI as an RN means only a taxonomy change later, not a new application.

When you can skip it

Staff nurses whose employer bills everything under facility and physician NPIs do not need one. It is free and permanent, so getting one early does no harm.

Taxonomy code for a registered nurse

The taxonomy code tells CMS and every payer your profession. For most registered nurses it is 163W00000X, Registered Nurse. SimpleNPI enters it for you from your license type.

Also used	NUCC name	When
`163WP0808X`	Psychiatric/Mental Health Registered Nurse	Registered Nurse, Psychiatric/Mental Health.
`164W00000X`	Licensed Practical Nurse	Licensed Practical Nurse (LPN / LVN).

Your license on the application

Enter your RN license number and the issuing state exactly as the board of nursing lists it. Compact (NLC) licenses use the home state.

Before you are licensed

Nursing students can use the Student taxonomy (390200000X) and switch to Registered Nurse when licensed.

Two free ways to get it

Option 1 · Free · Easiest

SimpleNPI files it for you

One short form: name, license, contact, address, identity and an e-signed authorization. About 3 minutes, no CMS account to create.
A person checks your license and address, then files the application with CMS under your signed authorization.
Your NPI arrives by email and text, with all the documentation, usually within 10 minutes. Filed after midnight Eastern? It issues around 6 am Eastern.

Usually within 10 minutes after the form is complete.

Start the free application

Option 2 · Free

Apply yourself at NPPES

Create an Identity & Access account at nppes.cms.hhs.gov.
Choose Apply for an NPI for myself, Individual (Type 1).
Enter identity, addresses, taxonomy code and license number, then certify and submit.

Usually a few business days; often minutes when the Social Security match passes.

Go to NPPES

What you need (either path)

Legal name exactly as it appears on your Social Security card, date of birth, Social Security number, sex, and birth state or country
Email and mobile phone
Mailing address and practice address (home is fine)
Registered Nurse license number (RN, BSN, MSN) and the state that issued it

Questions registered nurses ask

Do registered nurses need an NPI number?

Only when your name goes on a claim or order: home health, hospice, Medicaid school programs, independent aesthetic or infusion practice, or if you plan to become an NP. Most staff RNs do not need one.

What is the taxonomy code for an RN?

163W00000X, Registered Nurse. LPNs and LVNs use 164W00000X.

Will my RN NPI carry over when I become an NP?

Yes. One NPI for life; you add the Nurse Practitioner taxonomy in NPPES.

Written by Ammon Hardin, LMT, who grew a massage practice to ten locations, built a veteran therapy network, and credentialed a large number of providers along the way. Updated Tue Oct 27, 2026. Free to read, free to use; SimpleNPI files NPI applications for free.