Physician Assistant

Physician Assistant Scope of Practice

PAs practice medicine with physician supervision in virtually every specialty and setting. Their scope of practice is determined by the PA’s education and experience, state law, facility policy and physician delegation.
See the resources below for more detailed information about PA scope of practice:

Texas Medical Board Rules and Regulations

Texas Medical Board Rules
Texas Statutes regarding PA Practice are in Chapter 185*
Standing Delegation Orders are in Chapter 193
*Please find Texas Statutes at

DPS and DEA – Prescriptive Authority

Physician Assistants must submit an application for a controlled substances registration to the Texas Department of Public Safety (TX DPS). Applications may be obtained by calling (512) 424-7293 or by submitting a query through the web form at: Physician assistant may apply for a DEA registration number. DEA applications may be obtained via the DEA’s web site at You may also call your local DEA office. Phone numbers can be found on

National Provider Identifier (NPI)

The Federal National Provider Identifier (NPI) is the health care provider identification system adopted by the U.S. Department of Health and Human Services (HHS) as part of the implementation of the Health Insurance Portability and Accountability Act (HIPAA). The National Provider Identification Number is a ten (10) digit number assigned to the provider for the rest of his/her professional practice. The NPI Application is available online and the NPI is required by Provider Support Services as part of your application for privileges.

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