John Razook, MD
John Razook, MD is a Diagnostic Radiology Physician in Columbia, SC, registered under NPI 1669458659. This provider registers 12 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 1241 ASSEMBLY ST STE B, Columbia, SC 29201. 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 |
|---|---|---|
| 20940 | SC | Diagnostic Radiology Physician primary |
| 20940 | SC | Nuclear Medicine Physician |
| 20940 | SC | Body Imaging Physician |
| 20940 | SC | Diagnostic Neuroimaging (Radiology)… |
| 20940 | SC | Nuclear Radiology Physician |
| 20940 | SC | Pediatric Radiology Physician |
| 20940 | SC | Radiation Oncology Physician |
| 20940 | SC | Therapeutic Radiology Physician |
| 20940 | SC | Vascular & Interventional Radiology… |
| 20940 | SC | Radiological Physics Physician |
| 20940 | SC | Diagnostic Ultrasound Physician |
| 20940 | SC | Neuroradiology Physician |
This provider holds licence 20940 issued in SC. 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
- 7911924592
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 Diagnostic Radiology covers
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease. NUCC Health Care Provider Taxonomy, code 2085R0202X
All registered taxonomy codes
This provider registers 12 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2085R0202X | Diagnostic Radiology Physician Diagnostic Radiology | 20940 | SC | primary |
| 207U00000X | Nuclear Medicine Physician | 20940 | SC | |
| 2085B0100X | Body Imaging Physician Body Imaging | 20940 | SC | |
| 2085D0003X | Diagnostic Neuroimaging (Radiology) Physician Diagnostic Neuroimaging | 20940 | SC | |
| 2085N0904X | Nuclear Radiology Physician Nuclear Radiology | 20940 | SC | |
| 2085P0229X | Pediatric Radiology Physician Pediatric Radiology | 20940 | SC | |
| 2085R0001X | Radiation Oncology Physician Radiation Oncology | 20940 | SC | |
| 2085R0203X | Therapeutic Radiology Physician Therapeutic Radiology | 20940 | SC | |
| 2085R0204X | Vascular & Interventional Radiology Physician Vascular & Interventional Radiology | 20940 | SC | |
| 2085R0205X | Radiological Physics Physician Radiological Physics | 20940 | SC | |
| 2085U0001X | Diagnostic Ultrasound Physician Diagnostic Ultrasound | 20940 | SC | |
| 2085N0700X | Neuroradiology Physician Neuroradiology | 20940 | SC |
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 | 1669458659 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 21, 2005 |
| Last updated | Feb 7, 2024 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
1241 ASSEMBLY ST STE B Columbia, SC 29201 (803) 766-3009 |
| Mailing address |
700 E MOREHEAD ST STE 300 Charlotte, NC 28202 |
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 | 6 | 6 | 9 | 4 | 5 | 8 | 6 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 3 | 9 | 8 | 5 | 7 | 6 | 1 |
Sum = 71 · next multiple of 10 = 80 · check digit = 9 · actual last digit = 9
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.