Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Callista Surgery Center, LLC

Q: What is the NPI number for Callista Surgery Center, LLC?

The NPI for Callista Surgery Center, LLC is 1144090390, a Type 2 (organization) record in the CMS NPPES registry.

Ambulatory Surgical Clinic/Center in Walnut Creek, CA · enumerated 2024 · authorized official Rahul Seth, Medical Director.

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

National Provider Identifier

1144090390

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Registry record

Entity type Organization (Type 2)

Legal business name Callista Surgery Center, LLC

Practice address 355 Lennon Ln Ste 275, Walnut Creek, CA, 94598

Phone (925) 357-9050

Enumeration date Jan 8, 2024

Last updated in NPPES Jan 8, 2024

Taxonomy & classification

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

Authorized official

Name Rahul Seth

Title Medical Director

Phone (925) 357-9050

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 Callista Surgery Center, LLC?

The NPI for Callista Surgery Center, LLC is 1144090390, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Callista Surgery Center, LLC?

NPPES lists Rahul Seth (Medical Director) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-08.