John Kalmar
John Kalmar is a provider specialising in Oral and Maxillofacial Pathology Dentistry in Columbus, OH, registered under NPI 1952464109.
Getting there
The practice address on file is 300 MARCONI BLVD STE 308, Columbus, OH 43215. 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 |
|---|---|---|
| 020958 | OH | Oral and Maxillofacial Pathology Dentistry primary |
This provider holds licence 020958 issued in OH. 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 - Pathology
- PAC ID
- 3375701402
- Enrollment ID
- I20120221000810
Medicare enrolment is recorded as approved under the provider type Practitioner - Pathology. 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 Oral and Maxillofacial Pathology covers
The specialty of dentistry and discipline of pathology that deals with the nature, identification, and management of diseases affecting the oral and maxillofacial regions. It is a science that investigates the causes, processes, and effects of these diseases. The practice of oral and maxillofacial pathology includes research and diagnosis of diseases using clinical, radiographic, microscopic, biochemical, or other examinations. NUCC Health Care Provider Taxonomy, code 1223P0106X
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 | 1952464109 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 19, 2006 |
| Last updated | Aug 1, 2025 |
| Status | Active |
| Sole proprietor | No |
| Practice address |
300 MARCONI BLVD STE 308 Columbus, OH 43215 (503) 906-7300 |
| Mailing address |
225 BEECH TRAIL CT Powell, OH 43065 |
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 | 9 | 5 | 2 | 4 | 6 | 4 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 1 | 2 | 8 | 6 | 8 | 1 | 0 |
Sum = 61 · next multiple of 10 = 70 · 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.