Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Robert Dale Arnold Jr., DMD

General Practice Dentistry in Marion, IL · enumerated 2007.

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

National Provider Identifier

1891915609

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Registry record

Entity type Individual (Type 1)

Name Robert Dale Arnold Jr.

Credential DMD

Sex Male

Practice address Marion, IL, 62959

Phone (618) 997-9005

Enumeration date Apr 26, 2007

Last updated in NPPES Apr 5, 2017

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 019-021739 (IL) Primary

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

Where does Robert Arnold practice?

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

What is the NPI number for Robert Arnold?

The National Provider Identifier (NPI) for Robert Arnold is 1891915609, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-04-05.