NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Premier Er Plus, San Marcos, LLC

Emergency Care Clinic/Center in San Marcos, TX · enumerated 2018 · authorized official Samantha Foss, Director of Administration.

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

National Provider Identifier

1558844258

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Premier Er Plus, San Marcos, LLC
Practice address 1509 N Interstate 35, San Marcos, TX, 78666
Enumeration date Sep 10, 2018
Last updated in NPPES Sep 10, 2018

Taxonomy & classification

261QE0002X Emergency Care Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Samantha Foss
Title Director of Administration

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 is the NPI number for Premier Er Plus, San Marcos, LLC?
The NPI for Premier Er Plus, San Marcos, LLC is 1558844258, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Premier Er Plus, San Marcos, LLC?
NPPES lists Samantha Foss (Director of Administration) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-10.