Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Tricia J. O'Brien, MD

General Practice Physician in Frisco, TX · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1174727945

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Registry record

Entity type Individual (Type 1)

Name Tricia J. O'Brien

Credential MD

Sex Female

Practice address 8641 5th St, Suite W8, Frisco, TX, 75034

Phone (214) 631-9321

Fax (888) 975-4204

Enumeration date Jun 13, 2007

Last updated in NPPES Sep 30, 2015

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License N1504 (TX) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Tricia O'Brien practice?

The practice location on file with NPPES is in Frisco, TX. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Tricia O'Brien?

The National Provider Identifier (NPI) for Tricia O'Brien is 1174727945, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-09-30.