William Maddox, M.D.
William Maddox, M.D. is a Clinical Cardiac Electrophysiology Physician in Birmingham, AL, registered under NPI 1003030693. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Birmingham, based on OpenStreetMap data collected Aug 31, 2026. Parking is available about 506 ft away. The nearest transit stop is 924 ft away, served by SW Corner of Lomb Av & Princeton Pkwy W.
Getting here and what is nearby
Transit NE Corner of Tuscaloosa Av & 10th St SW 230 ft ~1 min
Parking 444 ft ~2 min
Transit SE Corner of Tuscaloosa Av & 10th St SW 457 ft ~2 min
Parking 491 ft ~2 min
Parking 506 ft ~2 min
Transit SW Corner of Lomb Av & Princeton Pkwy W 924 ft ~4 min
Restaurant McDonald's 0.20 mi ~4 min
732 Lomb Avenue, Birmingham 35211
Su-Th 05:00-23:00; Fr, Sa 05:00-24:00
Gas station Chevron 0.30 mi ~7 min
Restaurant Rally's 0.34 mi ~7 min
636 Lomb Avenue Southwest, Birmingham 35211
Su-Th 10:00-24:00; Fr,Sa 10:00-01:00
Gas station BP 0.37 mi ~8 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 |
|---|---|---|
| 30758 | AL | Cardiovascular Disease Physician |
| RT000472 | GA | Internal Medicine Physician |
| 059550 | GA | Cardiovascular Disease Physician |
| 30758 | AL | Clinical Cardiac Electrophysiology… primary |
Licences are recorded in 2 states: AL, GA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Cardiovascular Disease (cardiology)
- PAC ID
- 6800984907
- Enrollment ID
- I20160106000583
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.
Licensed in 2 states
This provider holds licences in 2 states: Alabama and Georgia. The practice address on file is in Birmingham, AL, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- 30758
- Specialty
- Cardiovascular Disease Physician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
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 4 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 | 30758 | AL | |
| 207R00000X | Internal Medicine Physician | RT000472 | GA | |
| 207RC0000X | Cardiovascular Disease Physician Cardiovascular Disease | 059550 | GA | |
| 207RC0001X | Clinical Cardiac Electrophysiology Physician Clinical Cardiac Electrophysiology | 30758 | AL | primary |
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 | 1003030693 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 13, 2007 |
| Last updated | Feb 1, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | M.D. |
| Practice address |
701 PRINCETON AVE SW Birmingham, AL 35211 (205) 783-3000 Fax (205) 297-9411 |
| Mailing address |
PO BOX 55310 Birmingham, AL 35255 |
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 | 0 | 3 | 0 | 6 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 3 | 0 | 6 | 9 |
Sum = 47 · next multiple of 10 = 50 · check digit = 3 · actual last digit = 3
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.