DR. GERARD DENNIS CERNIAK M.D.
NPI 1003587049
Internal Medicine - Gastroenterology in Joliet, IL

Q: What is Gerard Cerniak's NPI number?

The NPI number for Gerard Cerniak is 1003587049. It was assigned to this individual provider in the NPPES registry on September 21, 2021.

Q: What is Gerard Cerniak's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Gerard Cerniak was last updated on December 15, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since September 21, 2021

208 TIMBERLINE CT., JOLIET, IL 60431(815) 744-7507 Get Directions Write a Review

NPPES record last updated: December 15, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Dec 15, 2021, Dec 10, 2021, Sep 21, 2021 (3 updates tracked since 2021).

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About Dr. Gerard Dennis Cerniak M.d. NPPES

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

DR. GERARD DENNIS CERNIAK M.D. (NPI 1003587049) is an individual gastroenterology provider in Joliet, Illinois, licensed in Illinois (36-46439) and active in the NPI registry since September 2021.

NPPES Registry Identity

NPI1003587049

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. GERARD DENNIS CERNIAKCredential: M.D.

Location Address208 TIMBERLINE CT.Joliet, IL 60431-4852

Mailing Address208 Timberline CtJoliet, IL 60431-4852 · (815) 744-7507

Phone(815) 744-7507

Sole ProprietorYes

Enumeration DateSeptember 21, 2021

Last NPPES UpdateDecember 15, 20213 updates tracked since enumeration

NPPES CertifiedDecember 15, 2021

✔ NPI 1003587049 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in IL · 36-46439

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Also ListedInternal MedicineTaxonomy 207R00000X · License 36-46439 (IL)

208 TIMBERLINE CT., Joliet, IL 60431

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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 Gerard Cerniak's NPI number?

The NPI number for Gerard Cerniak is 1003587049. It was assigned to this individual provider in the NPPES registry on September 21, 2021.

Where is Gerard Cerniak located?

Gerard Cerniak practices at 208 Timberline Ct., Joliet, IL 60431. The listed phone number is (815) 744-7507.

What is Gerard Cerniak's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for Gerard Cerniak was last updated on December 15, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.