Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Sierra Surgicenter

Q: What type of organization is Sierra Surgicenter?

Sierra Surgicenter is registered in NPPES as a Ambulatory Surgical Clinic/Center (its primary provider taxonomy).

Ambulatory Surgical Clinic/Center in Walnut Creek, CA · enumerated 2005 · authorized official Deborah Mack, Regional Vice President.

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

National Provider Identifier

1053307454

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Registry record

Entity type Organization (Type 2)

Legal business name Sierra Surgicenter

Practice address 1601 Ygnacio Valley Rd, Walnut Creek, CA, 94598

Phone (925) 947-5276

Enumeration date Sep 21, 2005

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

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

Authorized official

Name Deborah Mack

Title Regional Vice President

Phone (925) 947-5276

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 Sierra Surgicenter?

Sierra Surgicenter is registered in NPPES as a Ambulatory Surgical Clinic/Center (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.