Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Richard J Dietzen, DC

Chiropractor in Chicago, IL · enumerated 2006.

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

National Provider Identifier

1376581116

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Registry record

Entity type Individual (Type 1)

Name Richard J Dietzen

Credential DC

Sex Male

Practice address 5545 W Montrose Ave, Chicago, IL, 60641

Phone (773) 282-6648

Fax (773) 282-6965

Enumeration date Jun 3, 2006

Last updated in NPPES Aug 14, 2014

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 038004283 (IL) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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.

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Frequently asked questions

What specialty is Richard Dietzen?

Richard Dietzen is registered in NPPES with the primary taxonomy of Chiropractor. 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 2014-08-14.