Gary Dumontier MD

Physician

901 Patients First DrWashington, MO 63090
Phone+1 636-239-7500
Fax+1 636-239-2836

Dr. Dumontier is on Doximity

As a Doximity member, you’ll join more than three million U.S. healthcare professionals—including 85+% of physicians, and 2/3 of all NPs and PAs—in a private, secure network.

Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
Connect with colleagues in the same hospital or clinic.
Read the latest clinical news, personalized to your specialty.

See Dr. Dumontier's full profile Already have an account?

Summary

I am board certified in internal medicine.

Education & Training

University of Missouri-Kansas City School of MedicineResidency, Pulmonary Disease and Critical Care Medicine, 2019 - 2025
Mercy Hospital (St Louis)Residency, Internal Medicine, 1989 - 1992
University of Missouri-Columbia School of MedicineClass of 1989

The following disclaimer is related to board certifications obtained from ABMS®, denoted by the ABMS® logo.

This information is proprietary data maintained in a copyrighted database owned by the American Board of Medical Specialties®. The display and presence of ABMS Data in no way constitutes any affiliation, association with, or endorsement of any advertising, promotion, or sponsorship by ABMS and its affiliates and subsidiaries, the ABMS Member Boards, or ABMS board certified physicians and medical specialists. Copyright 2026 American Board of Medical Specialties®. All rights reserved.

The user is responsible for ensuring that the profile obtained in this directory is the profile of the physician or medical specialist being sought.

A self-designated specialty, subspecialty, or practice area neither implies nor is equivalent to ABMS board certification or the existence of specialized training by or competence of a physician or medical specialist.

Certifications & Licensure

MO State Medical License 1990 - 2027
American Board of Internal Medicine Internal Medicine

Awards, Honors, & Recognition

CMS Meaningful Use Stage 1 Certification EpicCare Ambulatory - Core EMR, Epic Systems Corporation, 2011, 2013-2017
CMS Meaningful Use Stage 1 Certification NextGen Ambulatory EHR, NextGen Healthcare, 2011, 2013-2017
CMS Meaningful Use Stage 2 Certification EpicCare Ambulatory 2014 Certified EHR Suite, Epic Systems Corporation, 2011, 2013-2017

Publications & Presentations

PubMed

Down-regulation of [3H]5-hydroxytryptamine binding sites in chick embryo brain by monoamine oxidase inhibitors or fenfluramine and potentiation by d,l-5-hydroxytryptop...
Joseph S. Soblosky, Gary DuMontier, Ingming Jeng
Journal of Neurochemistry. 1985-12-01