ONSITE PHYSICIAN SERVICES OF ILLINOIS, S.C.
NPI 1801766084
Family Medicine in Middlefield, OH

Q: What is Onsite Physician Services Of Illinois, S.C.'s specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Active since November 11, 2025

16052 INDUSTRIAL PKWY, MIDDLEFIELD, OH 44062(815) 363-9500 Get Directions Write a Review

NPPES record last updated: November 11, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Onsite Physician Services Of Illinois, S.c. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ONSITE PHYSICIAN SERVICES OF ILLINOIS, S.C. (NPI 1801766084) is a healthcare organization registered as a family medicine in Middlefield, Ohio and active in the NPI registry since November 2025. The organization lists Alan Gegenheimer, President, as its authorized official.

NPPES Registry Identity

NPI1801766084

Entity TypeOrganization

Primary Taxonomy207Q00000X

Legal Business NameONSITE PHYSICIAN SERVICES OF ILLINOIS, S.C.

Location Address16052 INDUSTRIAL PKWYMiddlefield, OH 44062-9382

Mailing Address4805 Prime PkwyMchenry, IL 60050-7002

Phone(815) 363-9500

Organization SubpartNo

Authorized OfficialAlan GegenheimerPresident · (815) 363-9500

Enumeration DateNovember 11, 2025

NPPES CertifiedNovember 11, 2025

✔ NPI 1801766084 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

16052 INDUSTRIAL PKWY, Middlefield, OH 44062

Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Onsite Physician Services Of Illinois, S.C.'s NPI number?

The NPI number for Onsite Physician Services Of Illinois, S.C. is 1801766084. It was assigned to this organization in the NPPES registry on November 11, 2025.

Where is Onsite Physician Services Of Illinois, S.C. located?

Onsite Physician Services Of Illinois, S.C. is located at 16052 Industrial Pkwy, Middlefield, OH 44062. The listed phone number is (815) 363-9500.

What is Onsite Physician Services Of Illinois, S.C.'s specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

When was this NPI record last updated?

The NPPES record for Onsite Physician Services Of Illinois, S.C. was last updated on November 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.