Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Cs Pacs 3 Il, S.C.

Q: What type of organization is Cs Pacs 3 Il, S.C.?

Cs Pacs 3 Il, S.C. is registered in NPPES as a Hospitalist Physician (its primary provider taxonomy).

Hospitalist Physician in Park Ridge, IL · enumerated 2025 · authorized official Elmer Choi, Owner/President/Director.

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

National Provider Identifier

1598577124

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Registry record

Entity type Organization (Type 2)

Legal business name Cs Pacs 3 Il, S.C.

Practice address 1001 N Greenwood Ave, Park Ridge, IL, 60068

Phone (847) 692-5600

Enumeration date Jan 21, 2025

Last updated in NPPES Jun 16, 2025

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians Primary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

Authorized official

Name Elmer Choi

Title Owner/President/Director

Phone (865) 693-1000

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 Cs Pacs 3 Il, S.C.?

Cs Pacs 3 Il, S.C. is registered in NPPES as a Hospitalist Physician (its primary provider taxonomy).

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-16.