The Texas Provider Identifier (TPI) number was a nine-digit ID that Texas assigned to healthcare providers enrolled in Medicaid and other state health programs. It no longer exists. Texas retired the TPI on September 1, 2021, and Texas Medicaid now uses the federal National Provider Identifier (NPI) for billing, claims, and enrollment. If you’ve run into a TPI reference today, it’s almost certainly on older paperwork or in a legacy system.
What the TPI Was For
The TPI was the state-level identifier that linked a provider to Texas Medicaid. It appeared on claim forms, prior authorization requests, and enrollment records, and it told the state which provider delivered a given service. The number was also used to track billing activity and flag patterns that might indicate fraud.
It sat alongside the NPI, the 10-digit federal identifier required under HIPAA for healthcare transactions nationwide.1Centers for Medicare & Medicaid Services. National Provider Identifier Standard (NPI) Because Texas ran its own numbering system, a provider needed both: the NPI for federal compliance and the TPI for state Medicaid billing. Providers often held several TPIs at once, typically one per practice location.
When and Why Texas Retired the TPI
Effective September 1, 2021, Texas removed TPI fields from all claim forms, electronic data interchange forms, and prior authorization requests, and providers began submitting the NPI in their place.2Texas Medicaid & Healthcare Partnership. TPI Number Removed From Claim Forms, EDI Forms, and Instructions TMHP ran a short transition window through November 30, 2021, during which older forms carrying a TPI were still accepted. After that date, forms with TPI fields were returned, which delayed authorization approvals and reimbursements.3Texas Medicaid & Healthcare Partnership. Prior Authorization Forms Are Being Updated Effective September 1, 2021
The change was more than cosmetic. TMHP confirmed that TPIs are no longer issued to any provider and that TPI language has been removed from provider-facing materials. Providers who previously juggled multiple TPIs now operate under a single NPI.4Texas Medicaid & Healthcare Partnership. PEMS Provider Webinar Question and Answer The dual-identifier setup had created extra paperwork and confusion, and consolidating around the NPI was the state’s response.
What You Use Instead
The NPI now does everything the TPI once did inside Texas Medicaid. It is the single identification number recognized across health plans, which simplifies billing for providers participating in more than one program.5Texas Medicaid & Healthcare Partnership. Reminder: TPI Number Removed From Claim Forms, EDI Forms, and Instructions
There is one narrow exception. Individual Transportation Participants in the Medical Transportation Program still receive a state-specific number, called an Atypical Provider Identifier (API), issued through PEMS. That group doesn’t qualify for a standard NPI, which is why a separate identifier remains in place for them.6Texas Medicaid & Healthcare Partnership (TMHP). Provider Enrollment and Management System (PEMS)
If You’re Still Seeing a TPI on Paperwork
A TPI on a document today signals that the document predates the September 2021 change, or that a legacy system hasn’t been updated. For current filings, substitute the provider’s NPI. Claim forms, EDI forms, and prior authorization requests submitted on old templates with a TPI field are no longer accepted and will be returned.
Old TPIs aren’t reassigned or reactivated, and there is no way to request a new one. If a payer, patient, or form is asking for a TPI in a current workflow, the correct response is to provide the NPI and point to the 2021 phase-out.
Enrolling in Texas Medicaid Without a TPI
Because the TPI is gone, Texas Medicaid enrollment now centers on the NPI. You obtain one through the National Plan and Provider Enumeration System (NPPES) before starting the state application, and you’ll also need a current, valid license or certification for your provider type with at least 30 days remaining before expiration.7Texas Medicaid & Healthcare Partnership. Texas Medicaid Provider Procedures Manual – Provider Enrollment
Enrollment runs through TMHP’s Provider Enrollment and Management System (PEMS).8Texas Health and Human Services. Medicaid and CHIP Enrollment and Revalidation The application collects your NPI, practice location details, and the services you provide, and you’ll sign an HHSC Medicaid Provider Agreement, submit an IRS W-9, and complete a Disclosure of Ownership and Control Interest Statement. Processing typically takes up to 60 days once TMHP receives a complete application, and some provider types face extra requirements such as a surety bond (DME and ambulance providers) or an application fee (institutional providers, set at $730 for 2025).9Texas Medicaid & Healthcare Partnership. Provider Enrollment Application Fee Increased for 2025