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Luis P. Bay, MD. PA

Internal Medicine Physician in Weslaco, TX · enumerated 2014 · authorized official Israel Silva, Administrator.

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

National Provider Identifier

1881091650

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Registry record

Entity type Organization (Type 2)
Legal business name Luis P. Bay, MD. PA
Practice address 1416 E Expressway 83, Weslaco, TX, 78596
Phone (361) 667-3234
Fax (361) 667-3231
Enumeration date Nov 21, 2014
Last updated in NPPES Nov 21, 2014

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License J5259 (TX) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License J5259 (TX) Primary

Authorized official

Name Israel Silva
Title Administrator
Phone (956) 792-5270

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

Where is Luis P. Bay, MD. PA located?
The practice location on file with NPPES is in Weslaco, TX.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2014-11-21. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-11-21.