Mark Thompson, D.O.
Mark Thompson, D.O. is a Therapeutic Radiology Physician in Lake City, FL, registered under NPI 1487646030. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 4520 W US HIGHWAY 90, Lake City, FL 32055. 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 |
|---|---|---|
| OS10194 | FL | Therapeutic Radiology Physician primary |
| OS10194 | FL | Radiation Oncology Physician |
This provider holds licence OS10194 issued in FL. 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 - Radiation Oncology
- PAC ID
- 6002706983
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Florida | I20071127000387 | Practitioner - Radiation Oncology |
| Georgia | I20251009000109 | Practitioner - Radiation Oncology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Radiation Oncology. There are 2 separate enrolment records across 2 states (FL, GA). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. 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 Therapeutic Radiology covers
Therapeutic Radiology certificate name was changed to Radiation Oncology. Use Radiation Oncology. NUCC Health Care Provider Taxonomy, code 2085R0203X
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 | |
|---|---|---|---|---|
| 2085R0203X | Therapeutic Radiology Physician Therapeutic Radiology | OS10194 | FL | primary |
| 2085R0001X | Radiation Oncology Physician Radiation Oncology | OS10194 | FL |
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 | 1487646030 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 19, 2005 |
| Last updated | May 5, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | D.O. |
| Practice address |
4520 W US HIGHWAY 90 Lake City, FL 32055 (352) 755-0601 Fax (352) 755-0602 |
| Mailing address |
104 WOODMONT BLVD STE 500 Nashville, TN 37205 |
| Other identifiers |
310302
· Other (FL) 02484 · Other (FL) PTAN AG644E · Other (FL) 0825156 · Medicaid (OH) 279300800 · Medicaid (FL) |
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 | 4 | 8 | 7 | 6 | 4 | 6 | 0 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 7 | 7 | 3 | 4 | 3 | 0 | 6 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
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.