Mikhail Tretiakov, MD
Mikhail Tretiakov, MD is a Pediatric Orthopaedic Surgery Physician in Seattle, WA, registered under NPI 1912353772. 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 4800 SAND POINT WAY NE, Seattle, WA 98105. 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 |
|---|---|---|
| MD61315341 | WA | Pediatric Orthopaedic Surgery Physician primary |
| MD61315341 | WA | Orthopaedic Surgery Physician |
This provider holds licence MD61315341 issued in WA. 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 - Orthopedic Surgery
- PAC ID
- 6406195239
- Enrollment ID
- I20220914003128
Medicare enrolment is recorded as approved under the provider type Practitioner - Orthopedic Surgery. 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 Pediatric Orthopaedic Surgery covers
An orthopedic surgeon who has additional training and experience in diagnosing, treating and managing musculoskeletal problems in infants, children and adolescents. These may include limb and spine deformities (such as club foot, scoliosis); gait abnormalities (limping); bone and joint infections; broken bones. NUCC Health Care Provider Taxonomy, code 207XP3100X
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 | |
|---|---|---|---|---|
| 207XP3100X | Pediatric Orthopaedic Surgery Physician Pediatric Orthopaedic Surgery | MD61315341 | WA | primary |
| 207X00000X | Orthopaedic Surgery Physician | MD61315341 | 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 | 1912353772 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 11, 2016 |
| Last updated | Sep 8, 2022 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
4800 SAND POINT WAY NE Seattle, WA 98105 (206) 987-2000 |
| Other identifiers |
1912353772
· Medicaid (WA) |
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 | 1 | 2 | 3 | 5 | 3 | 7 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 2 | 2 | 6 | 5 | 6 | 7 | 5 |
Sum = 68 · next multiple of 10 = 70 · check digit = 2 · actual last digit = 2
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.