Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Alcides B Cairus MD PA

Surgery Physician in San Marcos, TX · enumerated 2008 · authorized official Darla Cairus, Office Manager.

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

National Provider Identifier

1629233200

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Registry record

Entity type Organization (Type 2)

Legal business name Alcides B Cairus MD PA

Parent organization Alcides B Cairus MD PA

Practice address 1999 Medical Pkwy Ste C, San Marcos, TX, 78666

Phone (512) 396-4994

Fax (512) 396-8969

Enumeration date Jul 23, 2008

Last updated in NPPES Jul 23, 2008

Taxonomy & classification

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License G2660 (TX) Primary

Authorized official

Name Darla Cairus

Title Office Manager

Phone (512) 396-4994

Other identifiers

Identifier	Type	State	Issuer
00G26G	Other	TX	BLUE CROSS BLUE SHIELD
128063805	Medicaid	TX	-

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 Alcides B Cairus MD PA located?

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-07-23. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-23.