Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Richard Greiff, DDS

General Practice Dentistry in O Fallon, IL · enumerated 2006 · practices at Harold J Bean Jr DDS PC.

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

National Provider Identifier

1134135270

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Registry record

Entity type Individual (Type 1)

Name Dr. Richard Greiff

Credential DDS

Sex Male

Practice address 1002 E Wesley Dr, O Fallon, IL, 62269

Phone (618) 628-7080

Fax (618) 628-9235

Enumeration date Jul 31, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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 is the NPI number for Richard Greiff?

The National Provider Identifier (NPI) for Richard Greiff is 1134135270, a Type 1 (individual) record in the CMS NPPES registry.

Where does Richard Greiff practice?

The practice location on file with NPPES is in O Fallon, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Harold J Bean Jr DDS PC General Practice Dentistry · O Fallon, IL NPI 1801909270 Harold Bean General Practice Dentistry · O Fallon, IL NPI 1235233438

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.