Onsite Physician Services of Illinois, S.c.
NPI 1801766084 · Family Medicine Physician · Middlefield, OH
Onsite Physician Services of Illinois, S.c. is a Family Medicine Physician organization in Middlefield, OH (NPI 1801766084).
Provider details
- NPI number
- 1801766084
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Alan Gegenheimer, President(815) 363-9500
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
Under 1 yr in 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
- 2025-11-11
- Last updated
- 2025-11-11
- Certified
- 2025-11-11
Frequently asked questions
- What is Onsite Physician Services of Illinois, S.c.'s NPI number?
- Onsite Physician Services of Illinois, S.c.'s National Provider Identifier (NPI) is 1801766084, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Onsite Physician Services of Illinois, S.c.?
- Onsite Physician Services of Illinois, S.c. is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Onsite Physician Services of Illinois, S.c. located?
- Onsite Physician Services of Illinois, S.c.'s practice location on file with NPPES is 16052 Industrial Pkwy, Middlefield, OH 44062-9382.
- What is Onsite Physician Services of Illinois, S.c.'s phone number?
- The practice phone number listed in the NPPES registry for Onsite Physician Services of Illinois, S.c. is (815) 363-9500.
- Who is the authorized official for Onsite Physician Services of Illinois, S.c.?
- The authorized official listed on Onsite Physician Services of Illinois, S.c.'s NPPES record is Alan Gegenheimer, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Onsite Physician Services of Illinois, S.c.'s NPI active?
- Yes — Onsite Physician Services of Illinois, S.c.'s NPI (1801766084) is active in the NPPES registry as of the last update on 2025-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.