NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

San Mateo Surgery Center LLC

Ambulatory Surgical Clinic/Center in San Mateo, CA · enumerated 2008 · authorized official Mark Sontag, Owner.

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

National Provider Identifier

1750553376

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name San Mateo Surgery Center LLC
Practice address 66 Bovet Rd, Suite 103, San Mateo, CA, 94402
Enumeration date Mar 25, 2008
Last updated in NPPES Feb 10, 2015

Taxonomy & classification

261QA1903X Ambulatory Surgical Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Mark Sontag
Title Owner

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 a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is San Mateo Surgery Center LLC?
San Mateo Surgery Center LLC is registered in NPPES as a Ambulatory Surgical Clinic/Center (its primary provider taxonomy).

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-02-10.