Isaac Thomsen, MD
Isaac Thomsen, MD is a Pediatric Infectious Diseases Physician in Nashville, TN, registered under NPI 1225185101. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 3601 THE VANDERBILT CLINIC, Nashville, TN 37232. 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 |
|---|---|---|
| 40964 | TN | Pediatric Infectious Diseases Physician primary |
| 40964 | TN | Internal Medicine Physician |
This provider holds licence 40964 issued in TN. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Pediatric Infectious Diseases covers
A pediatrician trained to care for children in the diagnosis, treatment and prevention of infectious diseases. This specialist can apply specific knowledge to affect a better outcome for pediatric infections with complicated courses, underlying diseases that predispose to unusual or severe infections, unclear diagnoses, uncommon diseases and complex or investigational treatments. NUCC Health Care Provider Taxonomy, code 2080P0208X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2080P0208X | Pediatric Infectious Diseases Physician Pediatric Infectious Diseases | 40964 | TN | primary |
| 207R00000X | Internal Medicine Physician | 40964 | TN | |
| 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 | 1225185101 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 4, 2007 |
| Last updated | Mar 14, 2022 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
3601 THE VANDERBILT CLINIC Nashville, TN 37232 (615) 322-3000 |
| Mailing address |
3841 GREEN HILLS VILLAGE DR STE 200 Nashville, TN 37215 |
| Other identifiers |
1506244
· Medicaid (TN) 7100050690 · Other (KY) P00731763 · Other (TN) 4192004 · Other (TN) 0009701218 · Other |
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 | 2 | 2 | 5 | 1 | 8 | 5 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 2 | 4 | 5 | 2 | 8 | 1 | 1 | 0 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
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.