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

Johnathan Au, MD, MPH

Individual provider Diagnostic Radiology Physician · NPI 1518463231

Johnathan Au, MD, MPH practises Diagnostic Radiology in Evanston, Illinois. Qualified in 2018, 8 years ago. Practices with Green Bay Radiology SC, a 24-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois and Wisconsin.

Years since qualifying
8
Licensed in
IL, WI
In the registry since
2018
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MPH — Master of Public Health
A graduate degree in population health.

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Practice location Address checks out

2650 Ridge Ave Dept OF Radiology
Evanston, IL 60201
Phone: (847) 570-2486
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 925 Seneca St, Seattle, WA 98101 — (206) 583-6079

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 036163315 (IL)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 83034-20 (WI)

Record details

NPI number1518463231
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MPH
Sole proprietorNo
NPI enumeratedApril 2, 2018
Last updated in NPPESApril 22, 2024
Certification dateApril 22, 2024

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Green Bay Radiology Sc — 24 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations16 on file with Medicare

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 patients594
Services billed 892 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.

  • Hshs St Clare Memorial Hospital Hospital · Oconto Falls, WI · listed as St Clare Memorial Hospital, Inc
  • Door County Medical Center Hospital · Sturgeon Bay, WI
  • St Marys Hospital Medical Ctr Hospital · Green Bay, WI
  • St Nicholas Hospital Hospital · Sheboygan, WI
  • St Vincent Hospital Hospital · Green Bay, WI

Colleagues at Green Bay Radiology SC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 24 clinicians in the practice; 5 are shown here.

Other providers in Evanston