Doctor profile · Federal record

Dr. Gary Dumontier, M.D.

Internal Medicine Physician (CMS: Internal Medicine) · Washington, MO

  • NPI 1437192481
  • Accepts Medicare
  • 37 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
901 Patients First Dr
Washington, MO 630904700
(636) 239-7500
fax (636) 239-2836

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
February 12, 2014
Year of graduation
1989 — 37 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Missouri #R7N44
Medicaid (2)
MO #1437192481 · MO #203315403

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1437192481. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
957
Distinct HCPCS
9
Medicare allowed
$96,221
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 546 241 $119
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 125 125 $121
G0008 Administration of influenza virus vaccine 84 83 $28
90662 Influenza vaccine split virus, preservative free 72 72 $72
0124A Adm sarscv2 bvl 30mcg/.3ml a 69 69 $38
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 17 17 $281
G0009 Administration of pneumococcal vaccine 17 17 $28
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and 16 14 $48
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 11 11 $13

In context: peer comparison

Among 10 peers in Washington Internal Medicine Physician, average services per provider: 99. This provider delivers 9.7× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$154
Transactions
9
Manufacturers
3
Payer (manufacturer) Industry Txns Amount
Abbvie INC. 7 $125.26
Sanofi-Aventis U.S. LLC 1 $14.50
Boehringer Ingelheim Pharmaceuticals, INC. 1 $13.86

By nature of payment

Food and Beverage
$154

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
7,194
Patients
1,885
Total drug cost
$88,077
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 943 249 $9,775
Amlodipine Besylate Generic 824 227 $5,146
Levothyroxine Sodium Generic 731 161 $9,987
Losartan Potassium Generic 696 184 $12,269
Rosuvastatin Calcium Generic 508 145 $7,529
Omeprazole Generic 497 128 $7,639
Lisinopril Generic 487 134 $4,114
Metoprolol Tartrate Generic 393 96 $2,987
Pantoprazole Sodium Generic 387 96 $6,472
Metoprolol Succinate Generic 329 86 $5,745

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Gary Dumontier's medical specialty?
Dr. Gary Dumontier practices Internal Medicine Physician in Washington, MO.
Where does Dr. Gary Dumontier practice?
Dr. Gary Dumontier practices at 901 Patients First Dr, Washington, MO 630904700. Office phone: 6362397500.
What is Dr. Gary Dumontier's NPI?
Dr. Gary Dumontier's National Provider Identifier (NPI) is 1437192481, issued by NPPES.
Does Dr. Gary Dumontier accept Medicare assignment?
Yes. Dr. Gary Dumontier accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gary Dumontier commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Administration of influenza virus vaccine (HCPCS G0008). Source: CMS Medicare Physician & Other Practitioners file.