NPPES file of Aug 9, 2026

Richard J. Horak, M.D.

Diagnostic Radiology Physician · Green Bay, WI

Richard J. Horak, M.D. is a diagnostic radiology physician with a practice address in Green Bay, Wisconsin, and NPI 1902092059, issued on Sep 22, 2007. Check the license (Wisconsin 52540-020, 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
1902092059
Name
Richard J. Horak
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
52540-020 WI
Self-reported in NPPES; status is on the state search
Practice location
1789 Shawano Ave, Green Bay, WI 54303
Phone
(920) 499-1428
Enumerated
Sep 22, 2007
Record last updated
Mar 20, 2023
Medicaid ID
100030163 WI
Medicare enrollment
Enrolled (PECOS I20181115002017); accepts Medicare assignment
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 1789 Shawano Ave

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

  1. Jeff Arnholt, MD, PHDDiagnostic Radiology Physician1144206814
  2. Bela Ballo, MDDiagnostic Radiology Physician1275551160
  3. Jesse Borman, MDDiagnostic Radiology Physician1508046418
  4. Patrick Carrigan, MDDiagnostic Radiology Physician1063447423
  5. Douglas Coyle, MDDiagnostic Radiology Physician1912932054
  6. John Gassner, MDDiagnostic Radiology Physician1588600696

Verify Richard J. Horak in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 52540-020    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 one group practice

  1. Radiology CharteredMarquette, MI

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

All 53 in Green Bay → All 1,005 in Wisconsin → Every provider in Green Bay →

Other diagnostic radiology physician records in Wisconsin

  1. Ibrahim AbdallaMadison, WI1467266809
  2. James Aceto, M.D.Mequon, WI1609858158
  3. Mohit Agarwal, MDMilwaukee, WI1265864169
  4. Sarah Agnew, RT (R).Madison, WI1730742776
  5. Serra Aktan, MDMadison, WI1427589662
  6. Maysoon Al-Hihi, MDMilwaukee, WI1093741399
  7. Giustino Albanese, M.D.Madison, WI1265634307
  8. Philip Albert, M.D.Wausau, WI1073619623
  9. Saad Ali, M.D.Milwaukee, WI1467617662
  10. Hailey Allen, M.D.Madison, WI1619235157

Common questions

What is Richard J. Horak, M.D.'s NPI number?

Richard J. Horak, M.D.'s National Provider Identifier (NPI) is 1902092059, issued on Sep 22, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Richard J. Horak, M.D. located?

The NPPES record lists a practice address at 1789 Shawano Ave, Green Bay, WI, 54303. Phone: (920) 499-1428. Providers update this record themselves, so call before visiting.

How can I verify Richard J. Horak, M.D.'s license?

NPPES lists Wisconsin license number 52540-020, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.