Craig Stemmer, MD
Craig Stemmer, MD is a Nephrology Physician in Boca Raton, FL, registered under NPI 1013900299.
Getting there
The practice address on file is 2900 N MILITARY TRL STE 195, Boca Raton, FL 33431. 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 |
|---|---|---|
| ME41999 | FL | Nephrology Physician primary |
This provider holds licence ME41999 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 - Nephrology
- PAC ID
- 0143262535
Medicare enrolment is recorded as approved under the provider type Practitioner - Nephrology. 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 Nephrology covers
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation. NUCC Health Care Provider Taxonomy, code 207RN0300X
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 | 1013900299 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 24, 2005 |
| Last updated | Jul 11, 2011 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
2900 N MILITARY TRL STE 195 Boca Raton, FL 33431 (561) 241-7100 Fax (561) 241-3647 |
| Other identifiers |
3102040
· UNITED HEALTHCARE 010016136 · RAILROAD MEDICARE 067912700 (FL) P505636 · OXFORD 0046634 · GHI |
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 | 1 | 3 | 9 | 0 | 0 | 2 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 2 | 3 | 9 | 0 | 0 | 2 | 9 |
Sum = 51 · next multiple of 10 = 60 · 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.