Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Howard K. O'Neil, MD

Individual provider Diagnostic Radiology Physician · NPI 1194701730

Howard K. O'Neil, MD is a Diagnostic Radiology in Downers Grove, Illinois. Graduated from University of Wisconsin School of Medicine in 1987, 39 years ago. Practices with Suburban Radiologists, SC, a 22-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
39
Trained at
University of Wisconsin School of Medicine
Licensed in
IL
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3815 Highland Ave Radiology Dept
Downers Grove, IL 60515-1500
Phone: (630) 275-5900
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X (IL)

Record details

NPI number1194701730
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 15, 2005
Last updated in NPPESJuly 13, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Also practisesINTERVENTIONAL RADIOLOGY
Medical schoolUNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE
Graduated 1987 (39 years in practice)
Group practice Suburban Radiologists, S.C. — 22 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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