Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. William Weaks, L.P.C.
Counselor in Prospect Heights, IL · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1770976060
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Registry record
Entity type Individual (Type 1)
Name Mr. William Weaks
Credential L.P.C.
Sex Male
Practice address 546 E Old Willow Rd, Prospect Heights, IL, 60070
Phone (847) 708-1758
Enumeration date Mar 10, 2015
Last updated in NPPES Mar 10, 2015
Taxonomy & licenses
LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy.
About the LPC 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
What is the NPI number for William Weaks?
The National Provider Identifier (NPI) for William Weaks is 1770976060, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Weaks practice?
The practice location on file with NPPES is in Prospect Heights, IL. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-03-10.