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

David G Dennison, MD

Individual provider Orthopaedic Surgery Physician · NPI 1538139639

David G Dennison, MD practises Hand Surgery in Eau Claire, Wisconsin. Graduated from State University of New York at Stony Brook, School of Medicine in 1996, 30 years ago. Practices with Mayo Clinic Health System-Northwest Wisconsin Region Inc, a 799-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Minnesota and Wisconsin.

Years since qualifying
30
Trained at
State University of New York at Stony Brook, School of Medicine
Licensed in
MN, WI
In the registry since
2006
Specialties on file
5
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

1400 Bellinger St
Eau Claire, WI 54703-5222
Phone: (715) 838-5222
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 200 1st St Sw, Rochester, MN 55905 — (507) 284-2511

Specialties & licences

Surgery of the Hand (Surgery) Physician (primary) Taxonomy 2086S0105X · Licence 82377-20 (WI)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence 44951 (MN)
Surgery of the Hand (Surgery) Physician Taxonomy 2086S0105X · Licence 44951 (MN)
Orthopaedic Hand Surgery Physician Taxonomy 207XS0106X · Licence 44951 (MN)
Surgery of the Hand (Surgery) Physician Taxonomy 2086S0105X · Licence 100784 (WI)

Record details

NPI number1538139639
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 23, 2006
Last updated in NPPESApril 16, 2026
Certification dateApril 16, 2026

Medicare enrollment

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

Medicare specialtyHAND SURGERY
Medical schoolSTATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE
Graduated 1996 (30 years in practice)
Group practice Mayo Clinic Health System-Northwest Wisconsin Region Inc — 799 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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.

Removal of nail tissue 1–10 times
Removal of tissue 1–10 times
Skin biopsy 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 patients136
Services billed 328 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.

Compensation for serving as faculty or as a speaker for a medical education program $3,000 1 payment
Travel and Lodging $966 2 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $230 2 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. Those with a page here are linked.

  • Mayo Clinic Health System-Red Cedar Inc Hospital · Menomonie, WI · listed as Mayo Clinic Health System-Northwest Wisconsin Region, Inc
  • Mayo Clinic Health System Chippewa Valley Hospital · Bloomer, WI
  • Mayo Clinic Health System Eau Claire Hospital Hospital · Eau Claire, WI
  • Mayo Clinic Health System Oakridge Hospital · Osseo, WI
  • Mayo Clinic Health System-Northland Hospital · Barron, WI

Colleagues at Mayo Clinic Health System-Northwest Wisconsin Region Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 799 clinicians in the practice; 12 are shown here.

Other providers in Eau Claire