Thomas Foster, MD
Thomas Foster, MD is an Adolescent Medicine (Internal Medicine) Physician in Grand Rapids, MI, registered under NPI 1033183371. 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 2373 64TH ST SW STE 1300, Grand Rapids, MI 49315. 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 |
|---|---|---|
| 4301086395 | MI | Adolescent Medicine (Internal Medicine)… primary |
| 4301086395 | MI | Internal Medicine Physician |
| 4301086395 | MI | Pediatrics Physician |
This provider holds licence 4301086395 issued in MI. 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 - Internal Medicine
- PAC ID
- 1153356423
- Enrollment ID
- I20051005000876
Medicare enrolment is recorded as approved under the provider type Practitioner - Internal Medicine. 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 Adolescent Medicine covers
An internist who specializes in adolescent medicine is a multi-disciplinary healthcare specialist trained in the unique physical, psychological and social characteristics of adolescents, their healthcare problems and needs. NUCC Health Care Provider Taxonomy, code 207RA0000X
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 | |
|---|---|---|---|---|
| 207RA0000X | Adolescent Medicine (Internal Medicine) Physician Adolescent Medicine | 4301086395 | MI | primary |
| 207R00000X | Internal Medicine Physician | 4301086395 | MI | |
| 208000000X | Pediatrics Physician | 4301086395 | MI |
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 | 1033183371 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 14, 2006 |
| Last updated | Sep 11, 2012 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
2373 64TH ST SW STE 1300 Grand Rapids, MI 49315 (616) 685-1350 |
| Mailing address |
245 STATE ST SE STE 1A Grand Rapids, MI 49503 |
| Other identifiers |
01EO
· Other (IL) 07215036 · Other (IL) 036088888 · Medicaid (IL) |
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 | 3 | 3 | 1 | 8 | 3 | 3 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 6 | 3 | 2 | 8 | 6 | 3 | 5 |
Sum = 59 · next multiple of 10 = 60 · 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.