Taxonomy code 363A00000X: Physician Assistant

363A00000X is the NUCC Health Care Provider Taxonomy code for Physician Assistant, in the group Physician Assistants & Advanced Practice Nursing Providers. It is one of the codes a provider lists on the NPI application to tell CMS and payers what they do.

Code

363A00000X

Grouping

Physician Assistants & Advanced Practice Nursing Providers

Classification

Physician Assistant

Section

Individual

NUCC version

26.1

Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Who uses this code

Physician assistants (the usual code)

Get an NPI with this taxonomy

Two free ways. SimpleNPI files the application for you with 363A00000X entered from your license type; the NPI usually arrives by email and text, with all the documentation, within 10 minutes. Or apply yourself at nppes.cms.hhs.gov and type the code into the taxonomy field. First, check the free registry in case you already have an NPI.

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

Related codes in Physician Assistant

Code	Name
`363AM0700X`	Physician Assistant, Medical
`363AS0400X`	Physician Assistant, Surgical

Questions

Is 363A00000X the right taxonomy code for a physician assistant?

Yes. 363A00000X, Physician Assistant, is the code SimpleNPI files for physician assistants. Related codes some choose instead: 363AM0700X (Medical Physician Assistant), 363AS0400X (Surgical Physician Assistant).

Can I change my taxonomy code later?

Yes, for free, in your NPPES account. Add the new code with its license, make it primary, and remove the old one if it no longer applies. The NPI itself never changes.

Does 363A00000X have to match my license?

It should describe the profession your license covers. Payers compare the taxonomy with the license during credentialing, and a mismatch slows that down.

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.