Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Hisham Saad Sadek, MD

Psychiatry Physician in Chicago, IL · enumerated 2006.

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

National Provider Identifier

1619941614

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Registry record

Entity type Individual (Type 1)

Name Mr. Hisham Saad Sadek

Credential MD

Sex Male

Practice address 2004 N Pulaski Rd, Chicago, IL, 60639

Phone (773) 772-8876

Fax (708) 444-1124

Enumeration date Feb 15, 2006

Last updated in NPPES Apr 2, 2008

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians Primary

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

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 specialty is Hisham Sadek?

Hisham Sadek is registered in NPPES with the primary taxonomy of Psychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-02.