Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Diagnostic Ultrasound Consultants Ltd

Radiology Clinic/Center in Oak Brook, IL · enumerated 2007 · authorized official Jason Birnholz, Doctor.

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

National Provider Identifier

1740404425

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Registry record

Entity type Organization (Type 2)

Legal business name Diagnostic Ultrasound Consultants Ltd

Practice address 120 Oakbrook Ctr, Suite 408, Oak Brook, IL, 60523

Phone (630) 954-5577

Fax (630) 954-2919

Enumeration date Apr 12, 2007

Last updated in NPPES May 24, 2011

Taxonomy & classification

261QR0200X Radiology Clinic/Center Ambulatory Health Care Facilities · License 36-065383 (IL) Primary

Authorized official

Name Jason Birnholz

Title Doctor

Phone (630) 954-5577

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-05-24. Verify at npiregistry.cms.hhs.gov.

Where is Diagnostic Ultrasound Consultants Ltd located?

The practice location on file with NPPES is in Oak Brook, IL.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-05-24.