Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Andrew J Johanek

Individual provider Diagnostic Radiology Physician · NPI 1437187366

Andrew J Johanek practises Diagnostic Radiology in Chicago, Illinois. Qualified in 2002, 24 years ago. Practices with Grundy Radiologists Inc, a 5-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
24
Licensed in
IL
In the registry since
2006
Specialties on file
2
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Practice location Address checks out

2300 N Childrens Plz
Chicago, IL 60614-3363 Not confirmed with CMS for 18 years — call before visiting
Phone: (773) 880-3521
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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)
Pediatric Radiology Physician Taxonomy 2085P0229X (IL)

Record details

NPI number1437187366
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJune 29, 2006
Last updated in NPPESJanuary 29, 2008

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Grundy Radiologists Inc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients3,166
Services billed 6,774 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Grundy Radiologists Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 5 clinicians in the practice; 3 are shown here.

Other providers in Chicago