363A00000X — Physician Assistant

363A00000X is the NUCC provider taxonomy code for Physician Assistant (individual providers). 163,593 providers in our latest NPPES snapshot list it as their primary taxonomy.

Taxonomy code 363A00000X
Display name Physician Assistant
Grouping Physician Assistants & Advanced Practice Nursing Providers
Classification Physician Assistant
Section Individual
Directory Physician Assistant provider directory

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.

Definition from the NUCC Health Care Provider Taxonomy code set.

Related taxonomy codes

Frequently asked questions

What does taxonomy code 363A00000X mean?
363A00000X is the NUCC Health Care Provider Taxonomy code for Physician Assistant in the "Physician Assistants & Advanced Practice Nursing Providers" grouping. It classifies individual providers.
Where is the taxonomy code used?
Providers select a taxonomy code when applying for an NPI, and it appears on insurance claims (CMS-1500 box 33b / 837 electronic claims) to identify the provider's classification. Payers may require the taxonomy that matches your credential and license.
How do I find providers with taxonomy 363A00000X?
Browse the Physician Assistant directory, or use the NPI search and filter by state.

Source: CMS NPPES (public data). Snapshot 2026-07-09.