What is Otto Mares's NPI number?

Otto Mares's National Provider Identifier (NPI) is 1003971847, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Otto Mares's specialty?

Otto Mares is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).

Where is Otto Mares located?

Otto Mares's practice location on file with NPPES is 502 S Washington St, Du Quoin, IL 62832-1904.

What is Otto Mares's phone number?

The practice phone number listed in the NPPES registry for Otto Mares is (618) 542-3032.

Is Otto Mares's NPI active?

Yes — Otto Mares's NPI (1003971847) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Otto Mares, D.D.S.

NPI 1003971847 · General Practice Dentistry · Du Quoin, IL

Otto Mares, D.D.S. is a General Practice Dentistry provider in Du Quoin, IL (NPI 1003971847).

Provider details

NPI number: 1003971847
Entity type: Individual
Primary specialty: General Practice DentistryDental Providers
Credential: D.D.S.
Sex: Male
Sole proprietor: Yes

Practice location

502 S Washington St

Du Quoin, IL 62832-1904

Phone: (618) 542-3032

Fax: (314) 667-5670

Street-level locationGet directions

More IL providers

Mailing address

502 S Washington St

Du Quoin, IL 62832-1904

Specialties & taxonomies

General Practice DentistryPrimary1223G0001X
Dental Providers

Profile Score

Detailed profile(84/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
19 yrs in NPPES registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2006-12-22
Last updated: 2007-07-08

Frequently asked questions

What is Otto Mares's NPI number?: Otto Mares's National Provider Identifier (NPI) is 1003971847, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Otto Mares's specialty?: Otto Mares is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
Where is Otto Mares located?: Otto Mares's practice location on file with NPPES is 502 S Washington St, Du Quoin, IL 62832-1904.
What is Otto Mares's phone number?: The practice phone number listed in the NPPES registry for Otto Mares is (618) 542-3032.
Is Otto Mares's NPI active?: Yes — Otto Mares's NPI (1003971847) is active in the NPPES registry as of the last update on 2007-07-08.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions