Doctors on Site, Ltd
NPI 1720410483 · General Practice Physician · South Barrington, IL
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Doctors on Site, Ltd is a General Practice Physician organization in South Barrington, IL (NPI 1720410483).
Provider details
- NPI number
- 1720410483
- Entity type
- Organization
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Roseann Gager, President(847) 882-2030
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-08-05
- Last updated
- 2017-04-28
Frequently asked questions
- What is Doctors on Site, Ltd's NPI number?
- Doctors on Site, Ltd's National Provider Identifier (NPI) is 1720410483, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Doctors on Site, Ltd?
- Doctors on Site, Ltd is classified in the NPPES registry as General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Doctors on Site, Ltd located?
- Doctors on Site, Ltd's practice location on file with NPPES is 1 Executive Ct, South Barrington, IL 60010-9533.
- What is Doctors on Site, Ltd's phone number?
- The practice phone number listed in the NPPES registry for Doctors on Site, Ltd is (847) 882-2030.
- Does Doctors on Site, Ltd accept Medicare?
- Doctors on Site, Ltd is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Doctors on Site, Ltd?
- The authorized official listed on Doctors on Site, Ltd's NPPES record is Roseann Gager, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Doctors on Site, Ltd's NPI active?
- Yes — Doctors on Site, Ltd's NPI (1720410483) is active in the NPPES registry as of the last update on 2017-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.