Mckenzie L Sienkiewich
Mckenzie L Sienkiewich is a Behavior Analyst provider (Behavior Analyst) practicing in Spanaway, WA, registered in the NPPES registry with NPI 1124673934 since 2019.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1124673934 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mckenzie L Sienkiewich |
| Sex | Female |
| Practice address | 27421 30TH AVE E, Spanaway, WA, 98387 |
| Phone | 2533412835 |
| Enumeration date | 2019-08-08 |
| Last updated in NPPES | 2024-11-06 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103K00000X | Behavior Analyst | Primary | RBT-19-9158 | WA |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| RBT-19-95198 | Other | WA | RBT CERTIFICATION NUMBER |
Copy-ready billing details
Provider: Mckenzie Sienkiewich NPI: 1124673934 Taxonomy: 103K00000X (Behavior Analyst) Address: 27421 30TH AVE E, Spanaway, WA, 98387
Verify this record
Cross-check NPI 1124673934 against the authoritative CMS record: view Mckenzie L Sienkiewich on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Is NPI 1124673934 active?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2024-11-06.