Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Peter J Kiefer MD Ltd

Family Medicine Physician in Des Plaines, IL · enumerated 2007 · authorized official Peter Kiefer, President.

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

National Provider Identifier

1952599482

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Registry record

Entity type Organization (Type 2)

Legal business name Peter J Kiefer MD Ltd

Practice address 1792 E Oakton St, Des Plaines, IL, 60018

Phone (847) 827-4496

Fax (847) 827-1256

Enumeration date Oct 10, 2007

Last updated in NPPES Oct 10, 2007

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Peter Kiefer

Title President

Phone (847) 827-4496

Other identifiers

Identifier	Type	State	Issuer
36059034	Medicaid	IL	-

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 Peter J Kiefer MD Ltd located?

The practice location on file with NPPES is in Des Plaines, IL.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-10-10. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-10.