Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Stephen Glenn Slade MD PA

Ophthalmology Physician in Houston, TX · enumerated 2011 · authorized official Delfina Villegas, Assistant Manager.

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

National Provider Identifier

1053698464

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Registry record

Entity type Organization (Type 2)

Legal business name Stephen Glenn Slade MD PA

Other name <Unavail>

Practice address 3900 Essex Ln, Suite 101, Houston, TX, 77027

Phone (713) 626-5544

Fax (713) 626-7744

Enumeration date Nov 14, 2011

Last updated in NPPES Oct 19, 2012

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License F7175 (TX) Primary

Authorized official

Name Delfina Villegas

Title Assistant Manager

Phone (713) 626-5544

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 is Stephen Glenn Slade MD PA located?

The practice location on file with NPPES is in Houston, TX.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2012-10-19. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-19.