Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Jill Elizabeth Tregler, MA
Counselor in Oak Brook, IL · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1609114644
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Registry record
Entity type Individual (Type 1)
Name Jill Elizabeth Tregler
Credential MA
Sex Female
Practice address 1010 Jorie Blvd Ste 200, Oak Brook, IL, 60523
Phone (847) 510-2880
Enumeration date Jan 25, 2013
Last updated in NPPES Aug 24, 2023
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 specialty is Jill Tregler?
Jill Tregler is registered in NPPES with the primary taxonomy of Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
Browse all → Jamie Kelly Counselor · Oak Brook, IL NPI 1477927697 Jennifer Mcadams Professional Counselor · Oak Brook, IL NPI 1689199069 Tabitha Guillaume Professional Counselor · Oak Brook, IL NPI 1265943344 Samanthia Gaspar Professional Counselor · Oak Brook, IL NPI 1275166803 Chelsea Hopson Clinical Social Worker · Oak Brook, IL NPI 1639825540 Allison Deckinga Counselor · Oak Brook, IL NPI 1134905516 Rachael Ijaodola Psychiatric/Mental Health Nurse Practitioner · Oak Brook, IL NPI 1740118512
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-24.