Ahmad Atassi, M. D
Ahmad Atassi, M. D is a Neuroradiology Physician in Madison, WI, registered under NPI 1154512242. This provider registers 5 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 E3/311, 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 |
|---|---|---|
| 51860-20 | WI | Neuroradiology Physician primary |
| 51860-20 | WI | Diagnostic Radiology Physician |
| 51860-20 | WI | Vascular & Interventional Radiology… |
| 51860-20 | WI | Body Imaging Physician |
| 51860-20 | WI | Diagnostic Neuroimaging (Radiology)… |
This provider holds licence 51860-20 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 - Diagnostic Radiology
- PAC ID
- 0648312231
Medicare enrolment is recorded as approved under the provider type Practitioner - Diagnostic Radiology. 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 Neuroradiology covers
A radiologist who diagnoses and treats diseases utilizing imaging procedures as they relate to the brain, spine and spinal cord, head, neck and organs of special sense in adults and children. NUCC Health Care Provider Taxonomy, code 2085N0700X
All registered taxonomy codes
This provider registers 5 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2085N0700X | Neuroradiology Physician Neuroradiology | 51860-20 | WI | primary |
| 2085R0202X | Diagnostic Radiology Physician Diagnostic Radiology | 51860-20 | WI | |
| 2085R0204X | Vascular & Interventional Radiology Physician Vascular & Interventional Radiology | 51860-20 | WI | |
| 2085B0100X | Body Imaging Physician Body Imaging | 51860-20 | WI | |
| 2085D0003X | Diagnostic Neuroimaging (Radiology) Physician Diagnostic Neuroimaging | 51860-20 | 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 | 1154512242 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 5, 2007 |
| Last updated | Dec 8, 2009 |
| Status | Active |
| Sole proprietor | No |
| Credential | M. D |
| Practice address |
600 HIGHLAND AVE E3/311 Madison, WI 53792 (305) 585-7500 |
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 | 5 | 4 | 5 | 1 | 2 | 2 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 1 | 4 | 1 | 1 | 4 | 2 | 8 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
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.