Jennifer Martinelli, MD
Jennifer Martinelli, MD is a provider specialising in Urgent Care Clinic/Center in Duluth, MN, registered under NPI 1881645356. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 400 E 3RD ST ESSENTIA HEALTH DULUTH CLINIC, Duluth, MN 55805. 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 |
|---|---|---|
| 40756 | MN | Urgent Care Clinic/Center primary |
| 40756 | MN | Family Medicine Physician |
This provider holds licence 40756 issued in MN. 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 - Family Practice
- PAC ID
- 4981746351
Medicare enrolment is recorded as approved under the provider type Practitioner - Family Practice. 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 Urgent Care covers
Definition to come... NUCC Health Care Provider Taxonomy, code 261QU0200X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 261QU0200X | Urgent Care Clinic/Center Urgent Care | 40756 | MN | primary |
| 207Q00000X | Family Medicine Physician | 40756 | MN |
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 | 1881645356 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 12, 2006 |
| Last updated | Nov 24, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
400 E 3RD ST ESSENTIA HEALTH DULUTH CLINIC Duluth, MN 55805 (218) 786-6000 |
| Other identifiers |
831493400
(MN) |
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 | 8 | 8 | 1 | 6 | 4 | 5 | 3 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 7 | 1 | 3 | 4 | 1 | 3 | 1 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.