William J Leonard, RPH
William J Leonard is a Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist provider (Pharmacist) practicing in Appleton, WI, registered in the NPPES registry with NPI 1235415738 since 2011. The credential RPH stands for Registered Pharmacist. Practices at Walgreen Co (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1235415738 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | William J Leonard |
| Credential | RPH |
| Sex | Male |
| Practice address | Appleton, WI, 54915 |
| Phone | 9207333016 |
| Enumeration date | 2011-10-27 |
| Last updated in NPPES | 2011-10-27 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1835P0018X | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | Primary | 9086-40 | WI |
RPH — Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential
Copy-ready billing details
Provider: William Leonard, RPH NPI: 1235415738 Taxonomy: 1835P0018X (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist) Address: Appleton, WI, 54915
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1346255411 | Walgreen Co | Organization | Pharmacy | Appleton, WI |
| 1407132491 | Wendy Hoffmeyer | Individual | Pharmacist | Appleton, WI |
| 1922384882 | Elizabeth Woelfel | Individual | Pharmacist | Appleton, WI |
| 1578849410 | Lisa Nate | Individual | Pharmacist | Appleton, WI |
| 1609152552 | Amy Holub | Individual | Pharmacist | Appleton, WI |
| 1922440601 | Derrick Shearer | Individual | Pharmacist | Appleton, WI |
| 1437591112 | Alex Gloudemans | Individual | Pharmacist | Appleton, WI |
| 1326439043 | Jennifer De La Paz | Individual | Pharmacist | Appleton, WI |
Verify this record
Cross-check NPI 1235415738 against the authoritative CMS record: view William J Leonard 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 William Leonard?
Where does William Leonard practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2011-10-27.