Individual Healthcare Provider
Gregory Szych, DO
Provider's NPPES record last updated: July 14, 2026
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1841268521
- Primary Specialty
- Internal Medicine — Gastroenterology
- Practice Location
- Herrin, Illinois
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 20, 2026, 7:50 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Internal Medicine
Gastroenterology
Allopathic & Osteopathic Physicians
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Taxonomy code 207RG0100X
Provider-Reported License Information
- Internal Medicine (Arkansas)
- E8994
- Internal Medicine (Kentucky)
- 04449
- Internal Medicine (Virginia)
- 0102204735
- Internal Medicine (Tennessee)
- DO1484
- Internal Medicine (Georgia)
- 95095
- Internal Medicine (Colorado)
- DR.0043812
- Internal Medicine (Mississippi)
- 21337
- Internal Medicine (Illinois)
- 036151389
Practice Locations
Practice Location
404 Lincoln Dr
Herrin, Illinois 62948-3789
Phone: (618) 993-0056
Additional Practice Location
1100 Belk Blvd
Oxford, Mississippi 38655-5242
Phone: (662) 513-1609
Fax: (662) 232-8555
Additional Practice Location
4550 Cobb Parkway North Nw Ste 210b
Acworth, Georgia 30101-4182
Phone: (470) 267-1760
Fax: (470) 986-7002
Additional Practice Location
863 Glenrock Rd
Norfolk, Virginia 23502-3701
Phone: (757) 252-2900
Fax: (757) 252-3235
Additional Practice Location
415 S 28th Ave
Hattiesburg, Mississippi 39401-7246
Phone: (601) 268-5680
Fax: (601) 579-5240
Additional Practice Location
2030 Mountain View Ave Ste 310
Longmont, Colorado 80501-3181
Phone: (720) 652-8650
Fax: (720) 652-8655
Additional Practice Location
2 Good Samaritan Way Ste 420
Mount Vernon, Illinois 62864-2478
Phone: (618) 899-4000
Record Information
- Enumeration Date
- March 9, 2006
- Provider's NPPES Record Last Updated
- July 14, 2026
- Certification Date
- July 14, 2026
- NPISignal NPPES Dataset
- August 2026
See Something Wrong?
Incorrect provider information
Everything on this page comes directly from the NPPES data CMS publishes. NPISignal cannot edit a provider's record — only the provider or organization can, directly through NPPES.
Update a record through NPPESSomething wrong with this page?
If NPISignal is displaying this data incorrectly — a formatting error, a broken link, a mismatch with the source file — let us know.
Report a display issue