Nicholas Vonbergen, M.D.
Nicholas Vonbergen, M.D. is a Clinical Cardiac Electrophysiology Physician in Madison, WI, registered under NPI 1124229406. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 600 HIGHLAND AVE, Madison, WI 53792. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 54041-20 | WI | Clinical Cardiac Electrophysiology… primary |
| 54041 | WI | Adult Congenital Heart Disease Physician |
| 54041-20 | WI | Pediatric Cardiology Physician |
This provider holds licence 54041-20 issued in WI. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Cardiovascular Disease (cardiology)
- PAC ID
- 6002986619
Medicare enrolment is recorded as approved under the provider type Practitioner - Cardiovascular Disease (cardiology). This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Clinical Cardiac Electrophysiology covers
A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them. NUCC Health Care Provider Taxonomy, code 207RC0001X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207RC0001X | Clinical Cardiac Electrophysiology Physician Clinical Cardiac Electrophysiology | 54041-20 | WI | primary |
| 207RA0002X | Adult Congenital Heart Disease Physician Adult Congenital Heart Disease | 54041 | WI | |
| 2080P0202X | Pediatric Cardiology Physician Pediatric Cardiology | 54041-20 | WI |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1124229406 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 31, 2007 |
| Last updated | Jun 20, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
600 HIGHLAND AVE Madison, WI 53792 (608) 263-6420 Fax (608) 265-8065 |
| Mailing address |
7974 UW HEALTH CT Middleton, WI 53562 |
| Other identifiers |
100009294
(WI) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 1 | 2 | 4 | 2 | 2 | 9 | 4 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 4 | 4 | 4 | 2 | 9 | 4 | 0 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.