Physician Assistant Taxonomy Code 363A00000X
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.
Code Details for 363A00000X
About Taxonomy Code 363A00000X
The taxonomy code 363A00000X identifies Physician Assistant within the Physician Assistants & Advanced Practice Nursing Providers provider grouping. It is a Level II — Classification code, which names a provider's occupation or service within the broader provider grouping.
NPI records show 210,296 registered providers whose primary or secondary taxonomy is this code. Of these, 11,040 (5%) are registered as organizations and 199,256 (95%) as individual providers. The states with the most physician assistant providers are New York (17,289), California (16,756), Texas (13,378). For Medicare enrollment, it crosswalks to specialty code 97 (Physician Assistant).
Taxonomy codes are self-selected by the provider based on their education and training; they describe the provider's type and specialty, not the specific services rendered.
Provider Composition & Statistics
Gender is recorded for individual providers only; organizations are not gendered. Source: NPPES, last updated 2026-06-28T00:00:00.
View all 210,296 providersPhysician Assistant Providers by State
Provider counts by U.S. state and territory. Select a state to open its provider directory.
Frequently Asked Questions
363A00000X questionsNPPES lists 210,296 registered providers with this taxonomy code (Physician Assistant).
Both. About 5% of these providers are registered as organizations and 95% as individuals.
It crosswalks to Medicare specialty code 97 (Physician Assistant).
It is a Level II - Classification code in the NUCC Health Care Provider Taxonomy set.
Use the "Providers by state" directory on this page to open the list of physician assistant providers registered in any U.S. state.
Source: National Uniform Claim Committee (NUCC) Health Care Provider Taxonomy code set, Version 25.1. Provider counts from NPPES. See nucc.org.