DR. WILLIAM PROSNIEWSKI DMD
NPI 1205405685
Dentist - General Practice in Bartlett, IL

Q: What is William Prosniewski's NPI number?

The NPI number for William Prosniewski is 1205405685. It was assigned to this individual provider in the NPPES registry on June 21, 2021.

Q: What is William Prosniewski's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Active since June 21, 2021

116 W BARTLETT AVE, BARTLETT, IL 60103(630) 837-2779 Get Directions Write a Review

NPPES record last updated: June 21, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. William Prosniewski Dmd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM PROSNIEWSKI DMD (NPI 1205405685) is an individual general practice provider in Bartlett, Illinois, licensed in Illinois (019033158) and active in the NPI registry since June 2021.

NPPES Registry Identity

NPI1205405685

Entity TypeIndividualMale

Primary Taxonomy1223G0001X

Provider Legal NameDR. WILLIAM PROSNIEWSKICredential: DMD

Location Address116 W BARTLETT AVEBartlett, IL 60103-4282

Mailing Address989 La Costa AveBartlett, IL 60103-6609 · (630) 432-1744

Phone(630) 837-2779

Sole ProprietorYes

Enumeration DateJune 21, 2021

NPPES CertifiedJune 21, 2021

✔ NPI 1205405685 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers

Taxonomy Code1223G0001X

License✔ Licensed in IL · 019033158

Definition

A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

116 W BARTLETT AVE, Bartlett, IL 60103

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BEST Life, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MARK JAMES PROSNIEWSKI DDS

Dentist (General Practice)

116 W BARTLETT AVE
BARTLETT, IL 60103

Dupage County (630) 837-2779

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Prosniewski's NPI number?

The NPI number for William Prosniewski is 1205405685. It was assigned to this individual provider in the NPPES registry on June 21, 2021.

Where is William Prosniewski located?

William Prosniewski practices at 116 W Bartlett Ave, Bartlett, IL 60103. The listed phone number is (630) 837-2779.

What is William Prosniewski's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

What insurance does William Prosniewski accept?

Health plans from BEST Life, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and HRI Dental & Vision and 4 other insurers list William Prosniewski as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Prosniewski was last updated on June 21, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.