Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Evan S. Oblonsky, M.D.

Diagnostic Radiology Physician in Arlington Heights, IL · enumerated 2005.

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

National Provider Identifier

1023019973

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Registry record

Entity type Individual (Type 1)

Name Evan S. Oblonsky

Credential M.D.

Sex Male

Practice address 1051 W Rand Rd, Arlington Heights, IL, 60004

Phone (847) 590-8888

Fax (847) 670-6801

Enumeration date Aug 2, 2005

Last updated in NPPES Apr 4, 2023

Taxonomy & licenses

202K00000X Phlebology Physician Allopathic & Osteopathic Physicians · License 036095538 (IL) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 036095538 (IL) 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
036095538	Other	IL	STATE LICENSE

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 1023019973 active?

Yes, as of the latest NPPES snapshot, NPI 1023019973 is active (record last updated 2023-04-04).

How do I verify Evan Oblonsky's NPI record?

Cross-check NPI 1023019973 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 2023-04-04.