Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Advocate Southwest Ambulatory Surgery Center LLC

Anesthesiology Physician in Tinley Park, IL · enumerated 2007 · authorized official Ronald Ladniak, Administrator.

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

National Provider Identifier

1336290386

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Registry record

Entity type Organization (Type 2)

Legal business name Advocate Southwest Ambulatory Surgery Center LLC

Other name <Unavail>

Practice address 18200 S. Lagrange Road, Tinley Park, IL, 60487

Phone (708) 570-2490

Fax (708) 570-2499

Enumeration date Jan 16, 2007

Last updated in NPPES Jan 10, 2011

Taxonomy & classification

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Ronald Ladniak

Title Administrator

Phone (630) 852-9300

Other identifiers

Identifier	Type	State	Issuer
CK7845	Other	IL	RAILROAD MEDICARE

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 Advocate Southwest Ambulatory Surgery Center LLC located?

The practice location on file with NPPES is in Tinley Park, IL.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-01-10. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-01-10.