Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Mary Lou Patterson, RNFA

Registered Nurse First Assistant in League City, TX · enumerated 2010 · practices at Mary Lou Patterson Rn Rnfa PC.

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

National Provider Identifier

1255643326

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Registry record

Entity type Individual (Type 1)

Name Mrs. Mary Lou Patterson

Credential RNFA

Sex Female

Practice address League City, TX, 77573

Phone (281) 332-7301

Fax (281) 332-7918

Enumeration date Jul 6, 2010

Last updated in NPPES Jul 6, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163WR0006X Registered Nurse First Assistant Nursing Service Providers · License 541193 (TX) Primary

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.

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Frequently asked questions

What specialty is Mary Lou Patterson?

Mary Lou Patterson is registered in NPPES with the primary taxonomy of Registered Nurse First Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Mary Lou Patterson Rn Rnfa PC Registered Nurse First Assistant · League City, TX NPI 1134296189

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-06.