Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Dean Duval Dietrich, D.M.D.

General Practice Dentistry in Dolton, IL · enumerated 2006 · practices at Pleasant Dental LLC.

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

National Provider Identifier

1548359722

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Dean Duval Dietrich

Credential D.M.D.

Sex Male

Practice address 609 E Sibley Blvd, Dolton, IL, 60419

Phone (708) 849-4400

Enumeration date Oct 12, 2006

Last updated in NPPES Nov 28, 2016

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 019020148 (IL) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Other identifiers

Identifier	Type	State	Issuer
42-1578802	Other	IL	EID - PLEASANT DENTAL LLC

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 Dean Dietrich?

Dean Dietrich is registered in NPPES with the primary taxonomy of General Practice Dentistry. 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.

Other providers at this practice address

Browse all →

Pleasant Dental LLC General Practice Dentistry · Dolton, IL NPI 1386795698

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-11-28.