Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Graham Services Corporation

Family Medicine Physician in Canton, IL · enumerated 2006 · authorized official Chris Duvendack, Vp of Clinic Operations.

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

National Provider Identifier

1942315197

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Registry record

Entity type Organization (Type 2)

Legal business name Graham Services Corporation

Other name <Unavail>

Practice address 175 S Main St, Canton, IL, 61520

Phone (309) 647-0201

Fax (309) 647-0201

Enumeration date Aug 20, 2006

Last updated in NPPES Dec 4, 2007

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

Authorized official

Name Chris Duvendack

Title Vp of Clinic Operations

Phone (309) 647-0201

Other identifiers

Identifier	Type	State	Issuer
02922981	Other	IL	BCBS
200397	Other	IL	BLACK LUNG
0062839	Other	IL	UMWA
CG5172	Other	IL	RAILROAD MEDICARE

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-12-04. Verify at npiregistry.cms.hhs.gov.

Where is Graham Services Corporation located?

The practice location on file with NPPES is in Canton, IL.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-04.