NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory Szych, DO

Gastroenterology Physician in Herrin, IL · enumerated 2006 · practices at Heartland Internal Medicine Ltd.

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

National Provider Identifier

1841268521

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Registry record

Entity type Individual (Type 1)
Name Gregory Szych
Credential DO
Sex Male
Practice address 404 Lincoln Dr, Herrin, IL, 62948
Phone (618) 993-0056
Fax (618) 993-0752
Enumeration date Mar 9, 2006
Last updated in NPPES Jul 14, 2026

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 04449 (KY) Secondary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 0102204735 (VA) Secondary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License DO1484 (TN) Secondary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 95095 (GA) Secondary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License DR.0043812 (CO) Secondary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License E8994 (AR) Primary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 21337 (MS) Secondary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 036151389 (IL) Secondary
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
04205019 Medicaid MS -
3307407 Medicaid TN -
7100407180 Medicaid KY -

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

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Gregory Szych?
Gregory Szych is registered in NPPES with the primary taxonomy of Gastroenterology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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