Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Joshua L Hermsen, MD

Individual provider Adult Congenital Heart Disease Physician · NPI 1063460566

Joshua L Hermsen, MD practises Cardiac Surgery in Madison, Wisconsin. Graduated from University of South Carolina School of Medicine in 2004, 22 years ago. Practices with University of Wisconsin Medical Foundation Inc, a 2,536-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois and Wisconsin.

Years since qualifying
22
Trained at
University of South Carolina School of Medicine
Licensed in
IL, WI
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

600 Highland Ave
Madison, WI 53792-4405
Phone: (608) 263-6420
Fax: (608) 263-0440
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 825 Eastlake Ave E, Seattle, WA 98109-4405 — (608) 334-1525

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence 50530-20 (WI)
Adult Congenital Heart Disease Physician Taxonomy 207RA0002X · Licence 50530 (WI)
Pediatric Surgery Physician Taxonomy 2086S0120X · Licence 50530-20 (WI)
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Taxonomy 208G00000X · Licence 036157200 (IL)

Record details

NPI number1063460566
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 5, 2006
Last updated in NPPESJanuary 5, 2022
Certification dateJanuary 5, 2022

Medicare enrollment

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

Medicare specialtyCARDIAC SURGERY
Also practisesADULT CONGENITAL HEART DISEASE (ACHD)
Medical schoolUNIVERSITY OF SOUTH CAROLINA SCHOOL OF MEDICINE
Graduated 2004 (22 years in practice)
Group practice University Of Wisconsin Medical Foundation Inc — 2536 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Pacemaker insertion or repair 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at University of Wisconsin Medical Foundation Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2536 clinicians in the practice; 12 are shown here.

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