Cullen Buchanan, MD
Cullen Buchanan, MD is a Cardiovascular Disease Physician in Madison, WI, registered under NPI 1003312026. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Madison, based on OpenStreetMap data collected Aug 28, 2026. Parking is available about 0.32 mi away. There is EV charging 0.29 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 729 ft away, served by Highland & Waisman (NB). A pharmacy sits 153 ft from the entrance (University Hospital Outpatient Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.35 mi away.
Getting here and what is nearby
Pharmacy University Hospital Outpatient Pharmacy 153 ft ~1 min
EV charging 415 ft ~2 min
EV charging 429 ft ~2 min
Parking 536 ft ~3 min
Transit University Bay & Highland (NB) 574 ft ~3 min
Transit Highland & University Bay (SB) 604 ft ~3 min
Transit Highland & Waisman (NB) 729 ft ~3 min
Coffee EVP Coffee University Bay 895 ft ~4 min
Restaurant Einstein Bros. Bagels 0.25 mi ~5 min
2701 University Avenue, Madison 53705
Mo-Fr 05:30-15:00; Sa,Su 06:00-15:00
Restaurant Wings Over 0.26 mi ~6 min
Restaurant Qdoba 0.26 mi ~6 min
2741 University Avenue, Madison 53705
Mo-Su 10:30-22:00
Gas station Spirit 0.28 mi ~6 min
EV charging 0.29 mi ~6 min
Convenience Spirit Mart 0.29 mi ~6 min
2801 University Avenue
Parking 0.32 mi ~7 min
2535 University Avenue, Madison 53705
Parking 0.32 mi ~7 min
2500 University Avenue, Madison 53705
Coffee Barriques - University 0.35 mi ~7 min
Hotel InnTowner 0.35 mi ~8 min
Convenience 7-Eleven 0.44 mi ~9 min
Gas station BP 0.44 mi ~9 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 76891 | WI | Cardiovascular Disease Physician primary |
This provider holds licence 76891 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
- 4385990431
- Enrollment ID
- I20250825000432
Medicare enrolment is recorded as approved under the provider type Practitioner - Cardiovascular Disease (cardiology). Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Cardiovascular Disease covers
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms. NUCC Health Care Provider Taxonomy, code 207RC0000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207RC0000X | Cardiovascular Disease Physician Cardiovascular Disease | 76891 | WI | primary |
| 390200000X | Student in an Organized Health Care Education/Training Program | — | — |
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 | 1003312026 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 30, 2018 |
| Last updated | Sep 18, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | MD |
| Practice address |
600 HIGHLAND AVE Madison, WI 53792 (608) 915-0200 |
| Mailing address |
7974 UW HEALTH CT Middleton, WI 53562 |
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 | 0 | 0 | 3 | 3 | 1 | 2 | 0 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 1 | 4 | 0 | 4 |
Sum = 44 · next multiple of 10 = 50 · 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.