Leif Grunseth, ATC, CNMT, LMT
Leif Grunseth, ATC, CNMT, LMT is a provider specialising in Legal Medicine in Bellevue, WA, registered under NPI 1306960919. This provider registers 2 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 11521 NE 21ST ST, Bellevue, WA 98004. 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 |
|---|---|---|
| MA0003261 | WA | Legal Medicine primary |
| MA00003261 | WA | Specialist |
This provider holds licence MA0003261 issued in WA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Legal Medicine covers
The specialty areas of medicine concerned with matters of, and relations with, substantive law and legal institutions; such as the conduct of medical examinations at crime scenes, performance of autopsies, giving of expert medical testimony in judicial proceedings, medical treatment of inmates of penal institutions, the practice of trauma medicine in law enforcement settings, and other clinical practice and medical science applications in the fields of law, law enforcement, and corrections. NUCC Health Care Provider Taxonomy, code 173000000X
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 | |
|---|---|---|---|---|
| 173000000X | Legal Medicine | MA0003261 | WA | primary |
| 174400000X | Specialist | MA00003261 | WA |
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 | 1306960919 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 19, 2007 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | ATC, CNMT, LMT |
| Practice address |
11521 NE 21ST ST Bellevue, WA 98004 (425) 646-9759 |
| Mailing address |
227 BELLEVUE WAY NE # 214 Bellevue, WA 98004 |
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 | 3 | 0 | 6 | 9 | 6 | 0 | 9 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 0 | 6 | 9 | 6 | 0 | 9 | 2 |
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.