Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Muhammad A Siddiqi, MD

Interventional Cardiology Physician in Chicago Heights, IL · enumerated 2005.

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

National Provider Identifier

1811978000

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Registry record

Entity type Individual (Type 1)

Name Dr. Muhammad A Siddiqi

Credential MD

Sex Male

Practice address 333 Dixie Hwy, Chicago Heights, IL, 60411

Phone (708) 756-0100

Fax (708) 709-6353

Enumeration date Nov 7, 2005

Last updated in NPPES Dec 28, 2011

Taxonomy & licenses

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 036082118 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
4673170001	Other	-	DMERC
036082118	Medicaid	IL	-
P00444355	Other	IL	RAILROAD MEDICARE
060064194	Other	IL	RR 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

What is the NPI number for Muhammad Siddiqi?

The National Provider Identifier (NPI) for Muhammad Siddiqi is 1811978000, a Type 1 (individual) record in the CMS NPPES registry.

Where does Muhammad Siddiqi practice?

The practice location on file with NPPES is in Chicago Heights, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Laboratory Corporation of America Clinical Medical Laboratory · Chicago Heights, IL NPI 1821071010 Isaac Kirstein Internal Medicine Physician · Chicago Heights, IL NPI 1114988425 Patricia Tiernan Obstetrics & Gynecology Physician · Chicago Hts, IL NPI 1447214614 Wellgroup Healthpartners LLC Ambulatory Surgical Clinic/Center · Chicago Heights, IL NPI 1699739896 Tonya Coats Family Medicine Physician · Chicago Hts, IL NPI 1962468363 William Leonard Pharmacist · Chicago Hts, IL NPI 1609832658 Wellgroup Healthpartners Pharmacy Clinic Pharmacy · Chicago Hts, IL NPI 1043276082 Robert Thomas Otolaryngology Physician · Chicago Hts, IL NPI 1699733774

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-28.