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

Robert J Wirtz, D.D.S.

Orthodontics and Dentofacial Orthopedics Dentistry in Oak Forest, IL · enumerated 2006 · practices at Olive Branch Counseling Associates, Inc..

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

National Provider Identifier

1992875801

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Registry record

Entity type Individual (Type 1)
Name Robert J Wirtz
Credential D.D.S.
Sex Male
Practice address Oak Forest, IL, 60452
Phone (708) 687-6600
Fax (708) 687-6639
Enumeration date Nov 8, 2006
Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

1223X0400X Orthodontics and Dentofacial Orthopedics 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.

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Frequently asked questions

Where does Robert Wirtz practice?
The practice location on file with NPPES is in Oak Forest, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Robert Wirtz?
The National Provider Identifier (NPI) for Robert Wirtz is 1992875801, a Type 1 (individual) record in the CMS NPPES registry.

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