Jillian Sage, BCBA

Jillian Sage is a Behavior Analyst provider (Behavior Analyst) practicing in Joliet, IL, registered in the NPPES registry with NPI 1043803950 since 2021.

✓ Active NPI ✓ Valid NPI checksum

NPI	1043803950
Entity type	Individual (Type 1)
Name	Jillian Sage
Credential	BCBA
Sex	Female
Practice address	742 ESSINGTON RD, Joliet, IL, 60435
Phone	8154691500
Enumeration date	2021-02-11
Last updated in NPPES	2024-09-16

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
106S00000X	Behavior Technician	Secondary	—	—
103K00000X	Behavior Analyst	Primary	1-22-59193	IL

Copy-ready billing details

Provider: Jillian Sage, BCBA
NPI: 1043803950
Taxonomy: 103K00000X (Behavior Analyst)
Address: 742 ESSINGTON RD, Joliet, IL, 60435

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1972599462	Frank Ostir	Individual	Chiropractor	Joliet, IL
1366474173	Ostir Chiropractic Clinic P.C.	Organization	Clinic/Center	Joliet, IL
1336385210	Joyce Kraus	Individual	Clinical Social Worker	Joliet, IL
1114223641	James Ludvik	Individual	Chiropractor	Joliet, IL
1356647341	Kristalyn Turner	Individual	Speech-Language Pathologist	Joliet, IL
1790064269	Ludvik Chiropractic Sc	Organization	Chiropractor	Joliet, IL
1679857577	Melanie Dewey	Individual	Mental Health Counselor	Joliet, IL
1578819397	Ostir Spinal Rehabilitation	Organization	Internal Medicine Physician	Joliet, IL

Verify this record

Cross-check NPI 1043803950 against the authoritative CMS record: view Jillian Sage on the official NPPES registry .

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. Read the full guide or validate an NPI number.

Frequently asked questions

What specialty is Jillian Sage?

Jillian Sage is registered in NPPES with the primary taxonomy of Behavior Analyst. 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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2024-09-16.