Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Eldon W Olson, MD

Diagnostic Radiology Physician in Mishawaka, IN · enumerated 2006 · practices at Radiology, Inc.

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

National Provider Identifier

1639159601

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Registry record

Entity type Individual (Type 1)

Name Eldon W Olson

Credential MD

Sex Male

Practice address 620 W Edison Rd, Ste 110, Mishawaka, IN, 46545

Phone (574) 258-1100

Fax (574) 258-1101

Enumeration date Jan 18, 2006

Last updated in NPPES May 21, 2013

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 01053117A (IN) Primary

2085B0100X Body Imaging Physician Allopathic & Osteopathic Physicians · License 01053117A (IN) Secondary

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License 01053117A (IN) Secondary

2085N0904X Nuclear Radiology Physician Allopathic & Osteopathic Physicians · License 01053117A (IN) Secondary

2085P0229X Pediatric Radiology Physician Allopathic & Osteopathic Physicians · License 01053117A (IN) Secondary

2085R0203X Therapeutic Radiology Physician Allopathic & Osteopathic Physicians · License 01053117A (IN) Secondary

2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License 01053117A (IN) Secondary

2085U0001X Diagnostic Ultrasound Physician Allopathic & Osteopathic Physicians · License 01053117A (IN) 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
100322280	Medicaid	IN	-

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 1639159601 active?

Yes, as of the latest NPPES snapshot, NPI 1639159601 is active (record last updated 2013-05-21).

How do I verify Eldon Olson's NPI record?

Cross-check NPI 1639159601 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-21.