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

William Luis Fernandez, M.D.

Emergency Medicine Physician in Galveston, TX · enumerated 2017.

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

National Provider Identifier

1134660467

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Registry record

Entity type Individual (Type 1)

Name William Luis Fernandez

Credential M.D.

Sex Male

Practice address Galveston, TX, 77555

Phone (409) 747-3131

Fax (409) 747-6129

Enumeration date Mar 20, 2017

Last updated in NPPES Aug 9, 2024

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

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License F65593291031 (IL) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License S8035 (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

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.

What specialty is William Fernandez?

William Fernandez is registered in NPPES with the primary taxonomy of Emergency Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-09.