DR. MATTHEW JOHN CORMIER MD
NPI 1245809847
Pediatrics in Saint Charles, MO

Q: What is Matthew Cormier's NPI number?

The NPI number for Matthew Cormier is 1245809847. It was assigned to this individual provider in the NPPES registry on June 18, 2021.

Q: What is Matthew Cormier's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Matthew Cormier was last updated on November 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 18, 2021PECOS Enrolled

11 GARVEY PKWY, SAINT CHARLES, MO 63303(636) 441-7280(636) 939-9208 Get Directions Write a Review

NPPES record last updated: November 21, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Nov 21, 2025, Jul 2, 2024, Jun 18, 2021 (3 updates tracked since 2021).

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About Dr. Matthew John Cormier Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MATTHEW JOHN CORMIER MD (NPI 1245809847) is an individual pediatrics provider in Saint Charles, Missouri, licensed in Missouri (2024015947) and active in the NPI registry since June 2021. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1245809847

Entity TypeIndividualMale

Primary Taxonomy208000000X

Provider Legal NameDR. MATTHEW JOHN CORMIERCredential: MD

Location Address11 GARVEY PKWYSaint Charles, MO 63303-5614

Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 454-2076 · Fax (314) 747-8953

Phone(636) 441-7280

Fax(636) 939-9208

Sole ProprietorNo

Enumeration DateJune 18, 2021

Last NPPES UpdateNovember 21, 20253 updates tracked since enumeration

NPPES CertifiedNovember 21, 2025

✔ NPI 1245809847 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in MO · 2024015947

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

11 GARVEY PKWY, Saint Charles, MO 63303

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Secondary Practice Locations 2

Location 11660 W Meyer RdWentzville, MO 63385-3409 · Phone (636) 332-6663 · Fax (636) 332-8230

Location 21 Childrens Pl, Div Ped Hospitalist MedSaint Louis, MO 63110-1002 · Phone (314) 454-2076 · Fax (314) 747-8953

Other Identifiers 1

Medicaid200098009MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cox HealthPlans.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Matthew John Cormier Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63303 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$86.32 typical visit price

range $55.65 – $169.38

Typical copayment $21.58 (range $13.91 – $42.34)

Most-billed visit code 99203

Established Patient

$98.37 typical visit price

range $17.76 – $137.92

Typical copayment $24.59 (range $4.44 – $34.48)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 10

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

WASHINGTON UNIVERSITY

Clinic/Center (Multi-Specialty)