Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JANUSZ WOLANIUK M.D.
NPI 1851374904
Pathology - Anatomic Pathology & Clinical Pathology in Saint Louis, MO

Active since November 22, 2005
6420 CLAYTON RD, SAINT LOUIS, MO 63117(314) 768-8202(314) 768-7145 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Janusz Wolaniuk M.d. NPPES

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

JANUSZ WOLANIUK M.D. (NPI 1851374904) is an individual anatomic pathology & clinical pathology provider in Saint Louis, Missouri, licensed in Missouri (107057) and active in the NPI registry since November 2005.

NPPES Registry Identity

NPI1851374904
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameJANUSZ WOLANIUKCredential: M.D.
Location Address6420 CLAYTON RDSaint Louis, MO 63117-1811
Mailing AddressPo Box 795083Saint Louis, MO 63179-0795 · (800) 899-5757 · Fax (314) 821-1833
Fax(314) 768-7145
Sole ProprietorNo
Enumeration DateNovember 22, 2005
Last NPPES UpdateJuly 13, 2026
NPI 1851374904 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License Licensed in MO · 107057
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
6420 CLAYTON RD, Saint Louis, MO 63117

Other Identifiers 6

Other118773MO · Blue Cross Blue Shield
Other29381MO · Group Health Plan
Other042938MO · Health Alliance
Other1101500MO · United Health Care
Other388977MO · Healthlink
OtherF43482MO · Mercy

Other Providers at the Same Location NPPES 20

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

Pharmacist
6420 CLAYTON RD
RICHMOND HEIGHTS, MO 63117
Registered Nurse
6420 CLAYTON RD
RICHMOND HEIGHTS, MO 63117
Dietitian, Registered
6420 CLAYTON RD
RICHMOND HEIGHTS, MO 63117
Pathology (Anatomic Pathology & Clinical Pathology)
6420 CLAYTON RD
SAINT LOUIS, MO 63117
Dietitian, Registered
6420 CLAYTON RD
RICHMOND HEIGHTS, MO 63117
Occupational Therapist
6420 CLAYTON RD
RICHMOND HEIGHTS, MO 63117
Student in an Organized Health Care Education/Training Program
6420 CLAYTON RD
SAINT LOUIS, MO 63117
Nurse Anesthetist, Certified Registered
6420 CLAYTON RD
SAINT LOUIS, MO 63117

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 Janusz Wolaniuk's NPI number?

The NPI number for Janusz Wolaniuk is 1851374904. It was assigned to this individual provider in the NPPES registry on November 22, 2005.

Where is Janusz Wolaniuk located?

Janusz Wolaniuk practices at 6420 Clayton Rd, Saint Louis, MO 63117. The listed phone number is (314) 768-8202.

What is Janusz Wolaniuk's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

When was this NPI record last updated?

The NPPES record for Janusz Wolaniuk was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 days 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.