NPI
Gastroenterologists in Saint Charles, MO
5 gastroenterologists in Saint Charles, MO in the October 12, 2026 NPPES file, by primary taxonomy (Internal Medicine, Gastroenterology). Each row shows the credential, practice address, phone, and NPI.
This search stays in Missouri.
License: a US government work, in the public domain (Public Domain Mark 1.0).
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Every provider listed as Internal Medicine, Gastroenterology near your ZIP
Active individuals and group practices from the NPI registry, grouped by practice address, as a spreadsheet.
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Gastroenterologists in Saint Charles
1 to 5 of 5
- 1437110491Martin Altman, M.D. · 400 1st Capitol Dr, Suite 201, Saint Charles MO 63301 · Phone (636) 669-2332 · Fax (636) 669-2401
- 1285694703Hari Diwakaran, M.D. · 400 1st Capitol Dr Ste 201, Saint Charles MO 63301 · Phone (636) 669-2332 · Fax (636) 669-2401
- 1295795722Marin Marcu, M.D. · 400 1st Capitol Dr, Suite 201, Saint Charles MO 63301 · Phone (636) 669-2332 · Fax (636) 669-2401
- 1053440222Lawrence Tierney, M.D. · 400 1st Capitol Dr Ste 201, Saint Charles MO 63301 · Phone (636) 669-2332
- 1679927230David Westrich, MD · 400 1st Capitol Dr Ste 201, Saint Charles MO 63301 · Phone (636) 669-2332
Nearby cities
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Related
Questions
How many gastroenterologists are in Saint Charles, MO?
5 active NPI records in the October 12, 2026 NPPES file list Internal Medicine, Gastroenterology as their primary taxonomy and a practice location in Saint Charles, MO.
How do I check a provider's NPI number?
Open the NPI number on a row. The record page shows the NPI, status, practice address, phone, specialties, and licenses as NPPES lists them.
Does this list show insurance or network status?
No. NPPES does not publish insurance or network status. This page lists public registry records only.
Source: NPPES NPI Registry, data as of October 12, 2026. Last updated October 12, 2026. How we source data. Corrections: hello@rivvi.ai.