Marc Korn, MD
Marc Korn, MD is an Interventional Pain Medicine Physician in Grand Rapids, MI, registered under NPI 1205253671. This provider registers 4 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 2680 LEONARD ST NE STE 3, Grand Rapids, MI 49525. 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 |
|---|---|---|
| 4301117305 | MI | Interventional Pain Medicine Physician primary |
| 4301117305 | MI | Anesthesiology Physician |
| 4301117305 | MI | Pain Medicine (Anesthesiology) Physician |
This provider holds licence 4301117305 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 - Pain Management
- PAC ID
- 3375825136
- Enrollment ID
- I20190730004239
Medicare enrolment is recorded as approved under the provider type Practitioner - Pain Management. 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 Interventional Pain Medicine covers
Interventional Pain Medicine is the discipline of medicine devoted to the diagnosis and treatment of pain and related disorders principally with the application of interventional techniques in managing subacute, chronic, persistent, and intractable pain, independently or in conjunction with other modalities of treatment. NUCC Health Care Provider Taxonomy, code 208VP0014X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 208VP0014X | Interventional Pain Medicine Physician Interventional Pain Medicine | 4301117305 | MI | primary |
| 390200000X | Student in an Organized Health Care Education/Training Program | — | — | |
| 207L00000X | Anesthesiology Physician | 4301117305 | MI | |
| 207LP2900X | Pain Medicine (Anesthesiology) Physician Pain Medicine | 4301117305 | 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 | 1205253671 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 24, 2014 |
| Last updated | Jul 3, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | MD |
| Practice address |
2680 LEONARD ST NE STE 3 Grand Rapids, MI 49525 (616) 317-7246 Fax (616) 920-6540 |
| Mailing address |
3333 EVERGREEN DR NE Grand Rapids, MI 49525 |
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 | 0 | 5 | 2 | 5 | 3 | 6 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 2 | 0 | 5 | 4 | 5 | 6 | 6 | 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.