Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John Clifford Treanor, MD

Individual provider Diagnostic Radiology Physician · NPI 1114006145

John Clifford Treanor, MD is a Diagnostic Radiology in Winfield, Illinois. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1984, 42 years ago. Practices with Radiology Subspecialists of Northern Illinois LLC, a 32-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
42
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
Licensed in
IL
In the registry since
2006
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

25 N Winfield Rd
Winfield, IL 60190
Phone: (630) 933-4240
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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 · Licence 036-073639 (IL)

Record details

NPI number1114006145
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 2, 2006
Last updated in NPPESJuly 9, 2007
Mailing address3132 Treesdale Ct, Naperville, IL 60564

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1984 (42 years in practice)
Group practice Radiology Subspecialists Of Northern Illinois Llc — 32 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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