Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Harry Glyn Greditzer Jr., MD

Diagnostic Radiology Physician in Saint Louis, MO · enumerated 2006.

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

National Provider Identifier

1215941166

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Registry record

Entity type Individual (Type 1)

Name Harry Glyn Greditzer Jr.

Credential MD

Sex Male

Practice address 11133 Dunn Road, Saint Louis, MO, 63136

Phone (314) 653-4300

Fax (314) 821-2180

Enumeration date Jul 28, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License R7801 (MO) Primary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians Secondary

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
100265	Other	-	H LINK
1077061	Other	-	MC MCAID
A27719	Other	-	GATE WAY
22730	Other	-	BLUE CHOICE
317617	Other	-	HLT PART
1611000	Other	-	PH PLAN
0006021895	Other	-	IL BLUE
1390	Other	-	MO BLUE
2781	Other	-	GHP
6006	Other	-	HCARE USA
L40182	Other	-	IL CARE

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.

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Frequently asked questions

How do I verify Harry Greditzer's NPI record?

Cross-check NPI 1215941166 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1215941166 active?

Yes, as of the latest NPPES snapshot, NPI 1215941166 is active (record last updated 2007-07-08).

Other providers at this practice address

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Roger Cerny Certified Registered Nurse Anesthetist · St Louis, MO NPI 1215916432 Paul Busse Diagnostic Radiology Physician · St Louis, MO NPI 1821004987 Tracy Hitt Certified Registered Nurse Anesthetist · St. Louis, MO NPI 1740552777 Thu Zar Lwin Student in an Organized Health Care Education/Training Program · Saint Louis, MO NPI 1942662564

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.