WASHINGTON UNIVERSITY
WASHINGTON UNIVERSITY is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1720799893, based in Hazelwood, MO. It is classified under Pharmacy.
Getting there
The practice address on file is 1 VILLAGE SQUARE SHOPPING CENTER, Hazelwood, MO 63042. 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
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 Pharmacy covers
A facility used by pharmacists for the compounding and dispensing of medicinal preparations and other associated professional and administrative services. A pharmacy is a facility whose primary function is to store, prepare and legally dispense prescription drugs under the professional supervision of a licensed pharmacist. It meets any licensing or certification standards set forth by the jurisdiction where it is located. NUCC Health Care Provider Taxonomy, code 333600000X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1720799893 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Dec 9, 2022 |
| Last updated | Apr 11, 2025 |
| Status | Active |
| Practice address |
1 VILLAGE SQUARE SHOPPING CENTER Hazelwood, MO 63042 (314) 252-7050 |
| Mailing address |
PO BOX 7412011 Chicago, IL 60674 |
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 | 7 | 2 | 0 | 7 | 9 | 9 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 4 | 0 | 5 | 9 | 9 | 8 | 9 |
Sum = 77 · next multiple of 10 = 80 · check digit = 3 · actual last digit = 3
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.