Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Illinois Medical Associates PC

Internal Medicine Physician in Orland Park, IL · enumerated 2025 · authorized official Sundar Sivaprakasam, Medical Director.

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

National Provider Identifier

1437031416

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Registry record

Entity type Organization (Type 2)

Legal business name Illinois Medical Associates PC

Practice address 14489 John Humphrey Dr Ste 100, Orland Park, IL, 60462

Phone (708) 906-0741

Enumeration date Jul 22, 2025

Last updated in NPPES Apr 23, 2026

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Sundar Sivaprakasam

Title Medical Director

Phone (708) 906-0741

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 Illinois Medical Associates PC located?

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2026-04-23. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-23.