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Doctors on Site, Ltd

Nurse Practitioner in South Barrington, IL · enumerated 2017 · authorized official Roseann Gager, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1487190732

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Registry record

Entity type Organization (Type 2)
Legal business name Doctors on Site, Ltd
Practice address 1 Executive Ct, Suite 1, South Barrington, IL, 60010
Phone (847) 882-2030
Enumeration date Jan 10, 2017
Last updated in NPPES Jan 10, 2017

Taxonomy & classification

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209014071 (IL) Primary

Authorized official

Name Roseann Gager
Title President
Phone (847) 882-2030

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.

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Frequently asked questions

What is the NPI number for Doctors on Site, Ltd?
The NPI for Doctors on Site, Ltd is 1487190732, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Doctors on Site, Ltd?
NPPES lists Roseann Gager (President) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-01-10.