Updated October 2026

Diagnostic radiologists in Green Bay, WI

Diagnostic radiology
Green Bay, Wisconsin

Diagnostic radiologists: 54
Linked to a hospital or group: 47
Hospitals with a diagnostic radiologist: 27
Medical groups with a diagnostic radiologist: 28
Practice at a hospital: 46

There are 54 diagnostic radiologists in Green Bay. Green Bay Radiology, SC has the most, 20, and Door County Medical Center has the most affiliated diagnostic radiologists, 23. 20% finished medical school 30 or more years ago.

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Green Bay diagnostic radiologists, listed A to Z by last name

Each diagnostic radiologist on the list has diagnostic radiology as their primary specialty and a Green Bay practice address. The list shows the NPI, and how many hospitals and medical groups each one practices with. A free account names every hospital and group, with validated contacts.

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Green Bay diagnostic radiologists, A to Z
Diagnostic radiologist	Hospitals	Medical groups	Email and phone
Johnathan Au, MD, MPHNPI 1518463231	7 hospitals	8 groups	Contacts
Lukasz S. Babiarz, MBA, MDNPI 1346476066	5 hospitals	6 groups	Contacts
Tyler J. Bailey, MDNPI 1447480256	7 hospitals	9 groups	Contacts
David J. Balison, MDNPI 1245307719	6 hospitals	11 groups	Contacts
Bela R. Ballo, MDNPI 1275551160	3 hospitals	2 groups	Contacts
Sharatchandra Subhaschandra Bidari, MDNPI 1568769099	3 hospitals	2 groups	Contacts
Dennis J. Bielke, MDNPI 1073668059	-	2 groups	Contacts
Jesse Jon Borman, MDNPI 1508046418	5 hospitals	2 groups	Contacts
Douglas J. Coyle, MDNPI 1912932054	3 hospitals	2 groups	Contacts
Mehul Mahendra Doshi, MDNPI 1578514287	6 hospitals	9 groups	Contacts
Henry K. Feider, MDNPI 1407901481	7 hospitals	5 groups	Contacts
Michael J. Grogan, JD, MDNPI 1518015627	6 hospitals	4 groups	Contacts
Paul C. Ho, MDNPI 1841235652	5 hospitals	4 groups	Contacts
David M. Horak, MDNPI 1730165515	5 hospitals	3 groups	Contacts
Richard J. Horak, MDNPI 1902092059	3 hospitals	2 groups	Contacts
Jimmy Huynh, MD, PhDNPI 1174977987	8 hospitals	10 groups	Contacts
Stephen F. Janas, MDNPI 1093795023	4 hospitals	1 group	Contacts
Frederick George Joachim III, MDNPI 1669738043	6 hospitals	9 groups	Contacts
Kristin E. Joachim, MDNPI 1497198022	6 hospitals	5 groups	Contacts
Nicholas S. Johnson, MDNPI 1548520695	6 hospitals	8 groups	Contacts
Nicholas Michael Kolanko, MDNPI 1427214857	6 hospitals	8 groups	Contacts
Scott Allen Koss, MDNPI 1265427876	4 hospitals	3 groups	Contacts
Sean M. Lehner, MDNPI 1366671125	7 hospitals	8 groups	Contacts
James Anthony Leschke, DONPI 1851822233	7 hospitals	5 groups	Contacts
Noam Littman, MDNPI 1851377881	7 hospitals	10 groups	Contacts
Lucas Brian Ludeman, MDNPI 1205080744	4 hospitals	13 groups	Contacts
Christopher Martin Mager, MDNPI 1407084478	4 hospitals	2 groups	Contacts
Jeremy Boone McCue, MDNPI 1033187927	6 hospitals	5 groups	Contacts
Madeline A. McNally, MDNPI 1457517195	5 hospitals	4 groups	Contacts
Robert J. Monette, MDNPI 1215962675	-	-	Contacts
Rory M. Nelson, MDNPI 1588853758	3 hospitals	2 groups	Contacts
Robert Martin Niedermeyer, DONPI 1629460746	8 hospitals	7 groups	Contacts
Tchaiko M. Parris, MDNPI 1467630954	2 hospitals	6 groups	Contacts
Ryan M. Peirce, MDNPI 1790704724	6 hospitals	10 groups	Contacts
Shelly Wenzel Reimer, MDNPI 1306200886	5 hospitals	3 groups	Contacts
Brett C. Richardson, DONPI 1871799395	4 hospitals	1 group	Contacts
Joshua David Riebe, MDNPI 1619023009	7 hospitals	8 groups	Contacts
Michael A. Ross, MDNPI 1124053582	-	-	Contacts
Jagteshwar Sandhu, MDNPI 1033778329	6 hospitals	5 groups	Contacts
Dustin L. Simpson, MDNPI 1710285630	5 hospitals	16 groups	Contacts
Christopher Jon Skowlund, MDNPI 1740201540	5 hospitals	2 groups	Contacts
James I. Sladky, MDNPI 1053467456	6 hospitals	6 groups	Contacts
Riley A. Smyth, MDNPI 1275791832	3 hospitals	3 groups	Contacts
Ronan H. Smyth, MDNPI 1578619979	6 hospitals	5 groups	Contacts
Ian A. Sproat, MDNPI 1174679575	5 hospitals	5 groups	Contacts
Susan Sung, MDNPI 1942425590	6 hospitals	4 groups	Contacts
Jordan Elizabeth Toman, MDNPI 1710142237	4 hospitals	3 groups	Contacts
Mark Andrew Welnick, MDNPI 1255698221	6 hospitals	6 groups	Contacts
Nami P. Zarvan, MDNPI 1003962416	6 hospitals	7 groups	Contacts

The list shows the 49 diagnostic radiologists with a public profile. The other 5 are counted in the total and searchable with a free account.

Sources: NPPES NPI Registry (CMS) and Dmand AI Affiliation Data

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Dmand AI has the EHR for 54 of 54 Green Bay diagnostic radiologists, at their hospital and their practice. Filter by Epic, Oracle Health, MEDITECH, athenahealth and more, then reach them with validated work emails and mobile numbers.

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Green Bay Radiology, SC has the most diagnostic radiologists in Green Bay, with 20

Green Bay Radiology is second with 20, and Radiology Associates of the Fox Valley third with 18. Counts are diagnostic radiologists with a Wisconsin address linked to each group.

Medical groups with the most diagnostic radiologists in Green Bay
#	Medical group	Parent organization	Diagnostic radiologists
1	Green Bay Radiology, SCGreen Bay	Parent on file	20
2	Green Bay RadiologyGreen Bay	Parent on file	20
3	Radiology Associates of the Fox ValleyNeenah	-	18
4	Prevea HealthGreen Bay	-	17
5	Prevea HealthSheboygan	-	17
6	Radiology CharteredGreen Bay	-	16
7	Madison RadiologistsMadison	Parent on file	9
8	BayCare ClinicGreen Bay	-	9
9	Aurora Medical GroupMilwaukee	Parent on file	7
10	SSM Health Dean Medical GroupMadison	Parent on file	7

Top 10 of 28 Green Bay medical groups with a diagnostic radiologist

Sources: Dmand AI Affiliation Data and Dmand AI Org Hierarchy Data

Door County Medical Center has the most affiliated diagnostic radiologists in Green Bay, with 23

Emplify Health Green Bay Hospital is second with 19, and HSHS St. Vincent Hospital third with 19. Green Bay diagnostic radiologists are affiliated with 27 hospitals in all.

Hospitals with the most diagnostic radiologists in Green Bay
#	Hospital	Health system	Diagnostic radiologists
1	Door County Medical CenterSturgeon Bay	HSHS	23
2	Emplify Health Green Bay HospitalGreen Bay	Emplify Health	19
3	HSHS St. Vincent HospitalGreen Bay	HSHS	19
4	HSHS St. Mary's Hospital Medical CenterGreen Bay	HSHS	18
5	HSHS St. Nicholas HospitalSheboygan	HSHS	17
6	Aurora Medical Center - Bay AreaMarinette	Advocate Health	15
7	Bellin Health Oconto HospitalOconto	Emplify Health	14
8	Aurora BayCare Medical CenterGreen Bay	Advocate Health	11
9	HSHS St. Clare Memorial HospitalOconto Falls	HSHS	11
10	Aurora Medical Center - Manitowoc CountyTwo Rivers	Advocate Health	4

Top 10 of 27 Green Bay hospitals with an affiliated diagnostic radiologistAll 8 Green Bay hospitals

See every hospital and group for each Green Bay diagnostic radiologist

Each public profile names one place a diagnostic radiologist practices. A free account shows all of them, with the employer, the EHR and validated contacts.

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Source: Dmand AI Affiliation Data

Most Green Bay diagnostic radiologists practice at a hospital: 46 of the 47 with a mapped site

35 also practice at a medical group site, and 16 at imaging centers. A diagnostic radiologist can practice at several kinds of site, so the shares overlap.

Green Bay diagnostic radiologists by site of care

Hospitals4698%
Medical group practices3574%
Imaging centers1634%
Breast imaging centers817%

Sources: Dmand AI Affiliation Data and Dmand AI Practice Data

20% of Green Bay diagnostic radiologists finished medical school 30 or more years ago

9 of the 46 Green Bay diagnostic radiologists with a graduation year on file. 3 graduated in the last 10 years.

Physicians by years since medical school

Under 10 years ago37%
10 to 19 years ago1635%
20 to 29 years ago1839%
30 to 39 years ago715%
40 or more years ago24%

Source: Dmand AI Professional Profile Data

Every Green Bay diagnostic radiologist profile shows current hospitals and groups, Medicare activity and NPI details

Primary practiceThe main place they practice, with its type and cityOn every profile
Every site of careEach hospital, clinic and group where they practice nowWith a free account
EmployerThe organization they work for, when one is on fileWith a free account
Medicare servicesServices and procedure codes billed to Medicare, from CMSOn every profile
Medicare Part D prescribingClaims and drug costs from Part D, from CMSOn every profile
Industry paymentsPayments from drug and device makers, from CMS Open PaymentsOn every profile
Publications and clinical trialsResearch papers and trials linked to the NPI, when on fileOn every profile
Licenses and graduation yearState license numbers and medical school graduation yearOn every profile
NPI detailsNPI, enumeration date, primary taxonomy and practice addressOn every profile
Work email and mobile numberFound on request through healthcare waterfall enrichment, then validatedWith a free account
EHR in useThe EHR at each site where they practiceWith a free account
Colleagues at each siteThe clinicians they work with at each hospital and groupWith a free account

Free account: 30 days free, self-serve, no credit card.

Sources: NPPES NPI Registry (CMS), Medicare Physician & Other Practitioners (CMS), Open Payments (CMS) and Dmand AI Affiliation Data

Sources for the Green Bay diagnostic radiologist directory

Sources for the data on this page
Data on this page	Source
HCPs, types and specialties	NPPES NPI Registry (CMS) and Dmand AI Professional Profile Data
Sites of care, hospitals and medical groups	Dmand AI Affiliation Data
Medical school graduation year	Dmand AI Professional Profile Data

Data last refreshed October 2026Report an inaccuracy Remove my information

Diagnostic radiologists are HCPs whose primary specialty is diagnostic radiology (taxonomy code 2085R0202X), with an active NPI and a Green Bay practice address.

FAQ

Frequently asked questions about diagnostic radiologists in Green Bay

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

How many diagnostic radiologists are in Green Bay?

54 diagnostic radiologists have an active NPI, a Green Bay practice address and diagnostic radiology (taxonomy code 2085R0202X) as their primary specialty. 47 of them are linked to a hospital or medical group.

Which Green Bay medical groups have the most diagnostic radiologists?

Green Bay Radiology, SC, with 20, followed by Green Bay Radiology with 20 and Radiology Associates of the Fox Valley with 18.

Which Green Bay hospitals have the most diagnostic radiologists?

Door County Medical Center, with 23 affiliated diagnostic radiologists, followed by Emplify Health Green Bay Hospital with 19 and HSHS St. Vincent Hospital with 19.

What share of Green Bay diagnostic radiologists practice at a hospital?

46 of the 47 Green Bay diagnostic radiologists with a mapped site of care, or 98%, have a current hospital affiliation.

What is the taxonomy code for diagnostic radiology?

2085R0202X is the NPPES taxonomy code for diagnostic radiology. Sub-specialties with their own code are counted on their own lists.

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