Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. William Joseph Chauvin Jr., RPH
Pharmacist in Libertyville, IL · enumerated 2026.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1710806971
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Registry record
Entity type Individual (Type 1)
Name Mr. William Joseph Chauvin Jr.
Credential RPH
Sex X
Practice address 326 Peterson Rd, Libertyville, IL, 60048
Phone (888) 852-0202
Enumeration date Jul 13, 2026
Last updated in NPPES Jul 13, 2026
Taxonomy & licenses
RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy.
About the RPH credential
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.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is William Chauvin?
William Chauvin is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-13.