NPPES file of Aug 9, 2026

Nicholas S. Johnson, M.D.

Diagnostic Radiology Physician · Green Bay, WI

Nicholas S. Johnson, M.D. is a diagnostic radiology physician with a practice address in Green Bay, Wisconsin, and NPI 1548520695, issued on May 23, 2012. Check the license (Wisconsin 66078-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1548520695
Name
Nicholas S. Johnson
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
66078-20 WI
Self-reported in NPPES; status is on the state search
Practice location
835 S Van Buren St, Green Bay, WI 54301
Phone
(920) 433-0111
Enumerated
May 23, 2012
Record last updated
Sep 24, 2022
Medicaid ID
1548520695 WI
Medicare enrollment
Enrolled (PECOS I20190425000007); accepts Medicare assignment
Medical or professional school
Medical College Of Wisconsin, 2012
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 835 S Van Buren St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Adetunji Adejumo, MDInfectious Disease Physician1942532528
  2. Emily Agen, MS, GCGenetic Counselor (M.S.)1780574806
  3. Youssef Ahmed, MDPediatrics Physician1114423092
  4. Zaheer Akhtar, DOHospitalist Physician1366002966
  5. Richard Amankwah, MDHospitalist Physician1164712741
  6. Joel Ament, MDPediatric Critical Care Medicine Physician1861425456

Verify Nicholas S. Johnson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 66078-20
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through 6 group practices

  1. Gbr Sheboygan LLCSheboygan, WI
  2. Green Bay Radiology SCGreen Bay, WI
  3. Orthopedic And Sports Medicine Specialists OF Green Bay SCGreen Bay, WI
  4. Radiology Associates OF The Fox Valley SCNeenah, WI
  5. St Vincent Hospital-Hospital Sisters-Third Order OF St FrancisLuxemburg, WI
  6. St. Nicholas Hospital-Sisters OF The Third Order OF St FrancisSheboygan, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Nicholas S. Johnson among 1,005 diagnostic radiology physician records in Wisconsin

Nicholas S. Johnson, M.D. is one of 1,005 diagnostic radiology physician records with a practice address in Wisconsin. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 73% of them.

  • NPI issued2012 · 73% of these records are older, 25% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2012 · median 2006 among the 664 with a school on file
  • Record last updated2022 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

53 diagnostic radiology physician records list a practice address in Green Bay

They are 53 of the 4,619 NPPES records with a practice address in Green Bay, and 1,005 diagnostic radiology physician records in Wisconsin.

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Lukasz Babiarz, M.D., M.B.A.Green Bay, WI 543011346476066
  2. Christopher Mager, MDGreen Bay, WI 543011407084478
  3. Madeline McNally, M.D.Green Bay, WI 543011457517195
  4. Tchaiko Parris, MDGreen Bay, WI 543011467630954
  5. James Picotte, M.D.Green Bay, WI 543011083786511
  6. Mark Welnick, M.D.Green Bay, WI 543011255698221
  7. Jeff Arnholt, MD, PHDGreen Bay, WI 543031144206814
  8. Douglas Coyle, MDGreen Bay, WI 543031912932054

Common questions

What is Nicholas S. Johnson, M.D.'s NPI number?

Nicholas S. Johnson, M.D.'s National Provider Identifier (NPI) is 1548520695, issued on May 23, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Nicholas S. Johnson, M.D. located?

The NPPES record lists a practice address at 835 S Van Buren St, Green Bay, WI, 54301. Phone: (920) 433-0111. Providers update this record themselves, so call before visiting.

How can I verify Nicholas S. Johnson, M.D.'s license?

NPPES lists Wisconsin license number 66078-20, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.