Allison Renee Washenko
Allison Renee Washenko is a Pharmacist provider (Pharmacist) practicing in O Fallon, IL, registered in the NPPES registry with NPI 1821698432 since 2020. Practices at Walmart Inc. (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1821698432 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Allison Renee Washenko |
| Sex | Female |
| Practice address | O Fallon, IL, 62269 |
| Phone | 6186329381 |
| Enumeration date | 2020-11-01 |
| Last updated in NPPES | 2025-06-09 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 183500000X | Pharmacist | Secondary | 2020024553 | MO |
| 183500000X | Pharmacist | Primary | 051.303197 | IL |
Copy-ready billing details
Provider: Allison Washenko NPI: 1821698432 Taxonomy: 183500000X (Pharmacist) Address: O Fallon, IL, 62269
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1518985027 | Walmart Inc. | Organization | Community/Retail Pharmacy | O Fallon, IL |
| 1790144343 | Senayet Nigeda | Individual | Pharmacist | O Fallon, IL |
| 1649870874 | Mallory Kovarik | Individual | Pharmacist | O Fallon, IL |
| 1124628946 | Carol Makarewicz | Individual | Pharmacist | O Fallon, IL |
Verify this record
Cross-check NPI 1821698432 against the authoritative CMS record: view Allison Renee Washenko 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
What is the NPI number for Allison Washenko?
Where does Allison Washenko practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-06-09.