Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gladstone A Tucker, MD

Geriatric Medicine (Internal Medicine) Physician in Marion, IL · enumerated 2006 · practices at Geriatric and Primary Care Services S C.

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

National Provider Identifier

1023087012

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Registry record

Entity type Individual (Type 1)

Name Dr. Gladstone A Tucker

Credential MD

Sex Male

Practice address 1606 Castleberry Dr, Marion, IL, 62959

Phone (618) 997-9519

Fax (618) 993-0592

Enumeration date Mar 14, 2006

Last updated in NPPES May 25, 2023

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 036111926 (IL) Secondary

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 036111926 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
252364	Other	IL	HARMONY
036111926	Medicaid	IL	-
07332006	Other	IL	BCBS
229260	Other	IL	COVENTRY
P00239844	Other	IL	MEDICARE - RAILROAD
699628	Other	IL	HEALTHLINK
9367182	Other	IL	CIGNA

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

What is the NPI number for Gladstone Tucker?

The National Provider Identifier (NPI) for Gladstone Tucker is 1023087012, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gladstone Tucker practice?

The practice location on file with NPPES is in Marion, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Geriatric and Primary Care Services S C Geriatric Medicine (Internal Medicine) Physician · Marion, IL NPI 1174535900

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-05-25.