Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. William Frederick Lay III, BSW, MS, RC
Counselor in Olympia, WA · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1790958726
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Registry record
Entity type Individual (Type 1)
Name Mr. William Frederick Lay III
Credential BSW, MS, RC
Sex Male
Practice address 2940 Limited Ln Nw, Olympia, WA, 98502
Phone (360) 586-0967
Fax (360) 586-0968
Enumeration date Apr 10, 2008
Last updated in NPPES Apr 10, 2008
Taxonomy & licenses
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 Lay?
The National Provider Identifier (NPI) for William Lay is 1790958726, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Lay practice?
The practice location on file with NPPES is in Olympia, WA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Jamie Henderson Counselor · Olympia, WA NPI 1376718171 Nathan O'Neill Counselor · Olympia, WA NPI 1114189966 Mary Novar Counselor · Olympia, WA NPI 1437302080 James Stillman Counselor · Olympia, WA NPI 1285873570 Christopher Phillips Counselor · Olympia, WA NPI 1821232380 Erin Cuomo Counselor · Olympia, WA NPI 1528293727 Shawna Wallis Counselor · Olympia, WA NPI 1871723221 Teresa Phelps Nelson Counselor · Olympia, WA NPI 1780917468
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-10.