Doctor profile · Federal record

Dr. Nicholas Vonbergen, M.D.

Clinical Cardiac Electrophysiology Physician (CMS: Cardiovascular Disease (Cardiology)) · Adult Congenital Heart Disease Physician · Pediatric Cardiology Physician · Madison, WI

  • NPI 1124229406
  • Accepts Medicare
  • 18 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
600 Highland Ave
Madison, WI 537920001
(608) 263-6420
fax (608) 265-8065
Additional location
1836 South Ave
La Crosse, WI 546015429
(608) 782-7300
Mailing address
7974 Uw Health CT
Middleton, WI 535625531

Credentials & registration

NPPES · NUCC
NPI registered
May 2007 — 19 yrs on file
Profile last updated
June 20, 2025
Year of graduation
2008 — 18 yrs since
Specialty taxonomy
207RC0001X — NUCC code
State licenses (2)
Wisconsin #54041-20 · Wisconsin #54041
Medicaid
WI #100009294

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1124229406. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$3,667
Transactions
2
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
AltaThera Pharmaceuticals LLC 2 $3,666.98

By nature of payment

Food and Beverage
$3,667

Frequently asked questions

Auto-generated from federal data
What is Dr. Nicholas Vonbergen's medical specialty?
Dr. Nicholas Vonbergen practices Clinical Cardiac Electrophysiology Physician in Madison, WI.
Where does Dr. Nicholas Vonbergen practice?
Dr. Nicholas Vonbergen practices at 600 Highland Ave, Madison, WI 537920001. Office phone: 6082636420.
What is Dr. Nicholas Vonbergen's NPI?
Dr. Nicholas Vonbergen's National Provider Identifier (NPI) is 1124229406, issued by NPPES.
Does Dr. Nicholas Vonbergen accept Medicare assignment?
Yes. Dr. Nicholas Vonbergen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.