Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael J Stadnyk, M. D.

Diagnostic Radiology Physician in Chesterfield, MO · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1356455463

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Registry record

Entity type Individual (Type 1)

Name Michael J Stadnyk

Credential M. D.

Sex Male

Practice address 36 Chesterfield Lake Road, Chesterfield, MO, 63005

Phone (573) 334-6071

Fax (573) 334-4739

Enumeration date Aug 18, 2006

Last updated in NPPES Jul 23, 2025

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 61451 (TN) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 103346 (MO) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
3848	Other	-	CMR
P00295078	Other	-	RAILROAD MEDICARE
208094714	Medicaid	MO	-
27716	Other	-	GROUP HEALTH PLAN
G32279	Other	-	MERCY HEALTH PLAN
Q061129	Medicaid	TN	-
332305	Other	-	HEALTHLINK
194361	Other	-	BLUE SHIELD
58770V12822	Other	-	HEALTHCARE USA

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1356455463 active?

Yes, as of the latest NPPES snapshot, NPI 1356455463 is active (record last updated 2025-07-23).

How do I verify Michael Stadnyk's NPI record?

Cross-check NPI 1356455463 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-23.