Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. William Ellsworth Johnson III, MSW, LCSW
Clinical Social Worker in Hines, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1255378881
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Registry record
Entity type Individual (Type 1)
Name Mr. William Ellsworth Johnson III
Credential MSW, LCSW
Sex Male
Practice address 5th Ave at Roosevelt Rd., Edward Hines Jr. Va Hospital, Bldg 200 Room 610, Hines, IL, 60141
Phone (708) 202-2101
Fax (708) 202-2346
Enumeration date Jun 1, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy.
About the LCSW 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 Johnson III?
William Johnson III is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.