Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jason G. Chamberlin, DO

Internal Medicine Physician in Farmington, IL · enumerated 2006 · practices at Graham Hospital Association.

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

National Provider Identifier

1831207349

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Registry record

Entity type Individual (Type 1)

Name Jason G. Chamberlin

Credential DO

Sex Male

Practice address 601 E Fort St, Farmington, IL, 61531

Phone (309) 245-2406

Fax (309) 649-6880

Enumeration date Aug 25, 2006

Last updated in NPPES Apr 14, 2021

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 036101084 (IL) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036101084 (IL) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
036101084	Medicaid	IL	-
1942315197	Other	IL	NPI CLINIC NUMBER
CG5172	Other	IL	RR MEDICARE GROUP#
461760	Other	IL	HEALTH LINK
IL0139	Other	IL	JOHN DEERE
02922981	Other	IL	BCBS
200397	Other	IL	BLACK LUNG
101084	Other	IL	OSF HEALTHPLANS
069684	Other	IL	HEALTH ALLIANCE
0062839	Other	IL	UMWA

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1831207349 active?

Yes, as of the latest NPPES snapshot, NPI 1831207349 is active (record last updated 2021-04-14).

How do I verify Jason Chamberlin's NPI record?

Cross-check NPI 1831207349 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Nancy Crouse Nurse Practitioner · Farmington, IL NPI 1821106345 Debra Hayes Nurse Practitioner · Farmington, IL NPI 1548378789 Graham Hospital Association Rural Health Clinic/Center · Farmington, IL NPI 1841436268

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-14.