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DR. CONSTANCE AGNES PIETRZAK M.D.
NPI 1174788343
Internal Medicine - Gastroenterology in Hazel Crest, IL

Active since July 27, 2008
17850 KEDZIE AVE STE 2100, HAZEL CREST, IL 60429(708) 957-4011 Get Directions Write a Review

NPPES record last updated: December 17, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 17, 2021, Feb 3, 2021 (2 updates tracked since 2021).

About Dr. Constance Agnes Pietrzak M.d. NPPES

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

DR. CONSTANCE AGNES PIETRZAK M.D. (NPI 1174788343) is an individual gastroenterology provider in Hazel Crest, Illinois, licensed in Illinois (036126021) and active in the NPI registry since July 2008.

NPPES Registry Identity

NPI1174788343
Entity TypeIndividualFemale
Primary Taxonomy207RG0100X
Provider Legal NameDR. CONSTANCE AGNES PIETRZAKCredential: M.D.
Location Address17850 KEDZIE AVE STE 2100Hazel Crest, IL 60429-2056
Mailing Address546 W Cornelia Ave, Apt 2eChicago, IL 60657-2751
Phone(708) 957-4011
Sole ProprietorYes
Enumeration DateJuly 27, 2008
Last NPPES UpdateDecember 17, 20212 updates tracked since enumeration
NPPES CertifiedDecember 17, 2021
✔ NPI 1174788343 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 · 036126021
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 125053383 (IL)
17850 KEDZIE AVE STE 2100, Hazel Crest, IL 60429
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Other Providers at the Same Location NPPES 5

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

MOTILAL A BHATIA MD SC
Internal Medicine (Gastroenterology)
17850 KEDZIE AVE STE 2100
HAZEL CREST, IL 60429
Cook County (708) 957-4011
EVELYN MONICA GAL
Nurse Practitioner
17850 KEDZIE AVE STE 2100
HAZEL CREST, IL 60429
Cook County (708) 957-4011
MS. RUPAL PATEL M.D.
Internal Medicine (Gastroenterology)
17850 KEDZIE AVE STE 2100
HAZEL CREST, IL 60429
Cook County (708) 957-4011
DR. NADIA K. BOZANICH M.D.
Internal Medicine (Gastroenterology)
17850 KEDZIE AVE STE 2100
HAZEL CREST, IL 60429
Cook County (708) 957-4011
JENNIFER I KLAAS NP
Nurse Practitioner
17850 KEDZIE AVE STE 2100
HAZEL CREST, IL 60429
Cook County (708) 957-4011

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 Constance Pietrzak's NPI number?

The NPI number for Constance Pietrzak is 1174788343. It was assigned to this individual provider in the NPPES registry on July 27, 2008.

Where is Constance Pietrzak located?

Constance Pietrzak practices at 17850 Kedzie Ave Ste 2100, Hazel Crest, IL 60429. The listed phone number is (708) 957-4011.

What is Constance Pietrzak'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 Constance Pietrzak was last updated on December 17, 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.