NPI Atlas

Physician Assistant

NUCC taxonomy code 363A00000X · 11,405 providers in Texas in the June 2026 NPPES file.

About this specialty

A physician assistant (PA) is a licensed clinician who practices medicine in collaboration with physicians. PAs take medical histories, examine and diagnose patients, order and interpret tests, assist in procedures, and prescribe medication.

The 363A00000X code is the general PA classification in the NUCC taxonomy, used when no surgical or medical specialization is recorded for the provider.

Official NUCC 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.

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Data: NPPES public registry, June 2026 file. Taxonomy definitions follow the NUCC Health Care Provider Taxonomy code set. Classification is self-reported by providers.