Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Nicol J Mack
Social Worker in New Lenox, IL · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1174312557
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Registry record
Entity type Individual (Type 1)
Name Nicol J Mack
Sex Female
Practice address 1032 Schoolgate Rd, New Lenox, IL, 60451
Phone (708) 768-1590
Fax (708) 768-1590
Enumeration date May 2, 2025
Last updated in NPPES Jun 6, 2025
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 150.112599 (IL) Primary
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 Nicol Mack?
Nicol Mack is registered in NPPES with the primary taxonomy of 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 2025-06-06.