NPPES file of Aug 9, 2026

Joshua L. Hermsen, M.D.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Madison, WI

Joshua L. Hermsen, M.D. is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Madison, Wisconsin, and NPI 1063460566, issued on May 5, 2006. Check the license (Wisconsin 50530-20, 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
1063460566
Name
Joshua L. Hermsen
Credential
M.D.
Primary taxonomy
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
License numbers
50530-20 WI
50530 WI
036157200 IL
Self-reported in NPPES; status is on the state search
Practice location
600 Highland Ave, Madison, WI 53792
Phone
(608) 263-6420
Enumerated
May 5, 2006
Record last updated
Jan 5, 2022
Fax
(608) 263-0440
Medicare enrollment
Enrolled (PECOS I20170728003005); accepts Medicare assignment
Medical or professional school
University Of South Carolina School Of Medicine, 2004
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 600 Highland Ave

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

  1. Michael AabergSurgery Physician1346991064
  2. Carrah Aadrik, CRNACertified Registered Nurse Anesthetist1326423286
  3. Daniel Abbott, MDSurgical Oncology Physician1750412615
  4. Alaa Abd-ElsayedPain Medicine Physician1194967703
  5. Safiyya Abdulkadir, MDRheumatology Physician1093455826
  6. Edwin Abel, M.D.Urology Physician1083800510

Verify Joshua L. Hermsen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 50530-20    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 one group practice

  1. University OF Wisconsin Medical Foundation IncMadison, WI

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

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Wisconsin

There are 115 thoracic surgery (cardiothoracic vascular surgery) physician records in Wisconsin.

All 115 in Wisconsin → Every provider in Madison →

Other thoracic surgery (cardiothoracic vascular surgery) physician records in Wisconsin

  1. Zenoun Abouzelam, MDAppleton, WI1699769695
  2. Khosro Adib, MDMadison, WI1932163581
  3. Ahmed Ali, M.D.Milwaukee, WI1558647677
  4. Hossein Almassi, MDMilwaukee, WI1255382768
  5. Andrea Axtell, MDMadison, WI1437562584
  6. James Bailey, MDGreen Bay, WI1962936245
  7. Thomas Barragry, M.D.Mequon, WI1659350643
  8. John Braxton, M.D.Weston, WI1073568655
  9. Jerold Brenowitz, MDMilwaukee, WI1639144595
  10. Thomas Cain, MDMarshfield, WI1922011071

Common questions

What is Joshua L. Hermsen, M.D.'s NPI number?

Joshua L. Hermsen, M.D.'s National Provider Identifier (NPI) is 1063460566, issued on May 5, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Joshua L. Hermsen, M.D. located?

The NPPES record lists a practice address at 600 Highland Ave, Madison, WI, 53792. Phone: (608) 263-6420. Providers update this record themselves, so call before visiting.

How can I verify Joshua L. Hermsen, M.D.'s license?

NPPES lists Wisconsin license number 50530-20, 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.

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.