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

Michael S Oldenburg, MD

Individual provider Otolaryngology Physician · NPI 1770847683

Michael S Oldenburg, MD practises Otolaryngology in Green Bay, Wisconsin. Graduated from University of Wisconsin School of Medicine in 2012, 14 years ago. Practices with St Vincent Hospital-Hospital Sisters-Third Order of St Francis, a 594-clinician group and accepts Medicare assignment. Licensed in Minnesota and Wisconsin.

Years since qualifying
14
Trained at
University of Wisconsin School of Medicine
Licensed in
MN, WI
In the registry since
2012
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1860 Shawano Ave
Green Bay, WI 54303-2667
Phone: (920) 496-4700
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Otolaryngology Physician (primary) Taxonomy 207Y00000X · Licence 67254-20 (WI)
Otolaryngology Physician Taxonomy 207Y00000X · Licence 56672 (MN)

Record details

NPI number1770847683
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 26, 2012
Last updated in NPPESFebruary 5, 2024
Certification dateFebruary 5, 2024

Medicare enrollment

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

Medicare specialtyOTOLARYNGOLOGY
Medical schoolUNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE
Graduated 2012 (14 years in practice)
Group practice St Vincent Hospital-Hospital Sisters-Third Order Of St Francis — 594 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.

Melanoma (skin cancer) excision 1–10 times
Removal or shaving of skin growth 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 patients193
Services billed 428 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Travel and Lodging $1,598 3 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $404 3 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Door County Medical Center Hospital · Sturgeon Bay, WI
  • St Marys Hospital Medical Ctr Hospital · Green Bay, WI
  • St Vincent Hospital Hospital · Green Bay, WI

Colleagues at St Vincent Hospital-Hospital Sisters-Third Order of St Francis

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 594 clinicians in the practice; 12 are shown here.

Other providers in Green Bay