Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Jonathan Michael Stem

Individual provider Surgery Physician · NPI 1336568096

Jonathan Michael Stem practises General Surgery in Madison, Wisconsin. Graduated from Wake Forest University School of Medicine in 2014, 12 years ago. Practices with University of North Carolina at Chapel Hill, a 2,079-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in North Carolina and Wisconsin.

Years since qualifying
12
Trained at
Wake Forest University School of Medicine
Licensed in
NC, WI
In the registry since
2014
Specialties on file
2
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Practice location Address checks out

600 Highland Ave
Madison, WI 53792
Phone: (608) 263-6400
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 101 Manning Dr, Chapel Hill, NC 27514-4220 — (984) 974-1000

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 2021-01749 (NC)
Surgery Physician Taxonomy 208600000X · Licence 72843-20 (WI)

Record details

NPI number1336568096
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 9, 2014
Last updated in NPPESOctober 8, 2021
Certification dateOctober 8, 2021

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolWAKE FOREST UNIVERSITY SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice University Of North Carolina At Chapel Hill — 2079 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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.

Colonoscopy 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.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients72
Services billed 152 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Unc Hospitals Hospital · Chapel Hill, NC · listed as UNC Hospital

Colleagues at University of North Carolina at Chapel Hill

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2079 clinicians in the practice; 12 are shown here.

Other providers in Madison