Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Tessa Olivia, Emily Williams, ARNP

Adult Health Nurse Practitioner in Houston, TX · enumerated 2009.

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

National Provider Identifier

1982838926

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Registry record

Entity type Individual (Type 1)

Name Tessa Olivia, Emily Williams

Credential ARNP

Sex Female

Practice address 7324 Southwest Fwy, Suite 1550, Houston, TX, 77074

Phone (713) 779-9800

Fax (713) 779-9813

Enumeration date May 5, 2009

Last updated in NPPES Feb 18, 2014

Taxonomy & licenses

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License ARNP9188035 (FL) Secondary

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 791388 (TX) Primary

Other identifiers

Identifier	Type	State	Issuer
002986203	Medicaid	FL	-

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

What specialty is Tessa Williams?

Tessa Williams is registered in NPPES with the primary taxonomy of Adult Health Nurse Practitioner. 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-02-18.