Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Keith Charles Knapp Jr., M.D.

Family Medicine Physician in Chicago, IL · enumerated 2005.

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

National Provider Identifier

1104817329

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Registry record

Entity type Individual (Type 1)

Name Keith Charles Knapp Jr.

Credential M.D.

Sex Male

Practice address 3303 S Halsted St, Suite 100, Chicago, IL, 60608

Phone (773) 890-0800

Fax (773) 890-5430

Enumeration date Nov 4, 2005

Last updated in NPPES Oct 2, 2025

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 036-062820 (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
036-062820	Other	IL	LICENSE

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.

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Frequently asked questions

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.

What specialty is Keith Knapp?

Keith Knapp is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-02.