DR. TONJA MATTHIAS D.C.
NPI 1861720336
Chiropractor in Fenton, MO

Q: What is Tonja Matthias's NPI number?

The NPI number for Tonja Matthias is 1861720336. It was assigned to this individual provider in the NPPES registry on November 21, 2009.

Q: What is Tonja Matthias's specialty?

The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.

Q: When was this NPI record last updated?

The NPPES record for Tonja Matthias was last updated on December 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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 November 21, 2009

36 FENTON PLZ, FENTON, MO 63026(314) 574-1907(636) 600-0670 Get Directions Write a Review

NPPES record last updated: December 29, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 29, 2025, Mar 1, 2023, Feb 7, 2023 and 2 more (5 updates tracked since 2022).

On this page

About Dr. Tonja Matthias D.c. NPPES

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

DR. TONJA MATTHIAS D.C. (NPI 1861720336) is an individual chiropractor in Fenton, Missouri, licensed in Missouri (2004028769) and active in the NPI registry since November 2009. She is a graduate of Logan College Of Chiropractic (2001).

NPPES Registry Identity

NPI1861720336

Entity TypeIndividualFemale

Primary Taxonomy111N00000X

Provider Legal NameDR. TONJA MATTHIASCredential: D.C.

Location Address36 FENTON PLZFenton, MO 63026-4110

Mailing Address36 Fenton PlzFenton, MO 63026-4110 · (314) 574-1907 · Fax (636) 600-0670

Phone(314) 574-1907

Fax(636) 600-0670

Sole ProprietorYes

Medical School CMSLogan College Of ChiropracticGraduated 2001

Enumeration DateNovember 21, 2009

Last NPPES UpdateDecember 29, 20255 updates tracked since enumeration

NPPES CertifiedDecember 29, 2025

✔ NPI 1861720336 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyChiropractorChiropractic Providers

Taxonomy Code111N00000X

License✔ Licensed in MO · 2004028769

Definition

A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.

36 FENTON PLZ, Fenton, MO 63026

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Tonja Matthias D.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8022065424

PECOS Enrollment IDI20050407000683

Medicare Billing Reassignment

Medicare enrollment records show Tonja Matthias reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

First Stop Chiropractic LLC

Same address

Chiropractor

36 FENTON PLZ
Fenton, MO 63026

Reassigned Medicare billing, Missouri enrollment

NPI 1699485797 (314) 574-1907

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES

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

FIRST STOP CHIROPRACTIC LLC

Chiropractor

36 FENTON PLZ
FENTON, MO 63026

St. Louis County (314) 574-1907

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Tonja Matthias's NPI number?

The NPI number for Tonja Matthias is 1861720336. It was assigned to this individual provider in the NPPES registry on November 21, 2009.

Where is Tonja Matthias located?

Tonja Matthias practices at 36 Fenton Plz, Fenton, MO 63026. The listed phone number is (314) 574-1907.

What is Tonja Matthias's specialty?

The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.

Is Tonja Matthias enrolled in Medicare?

Yes. Tonja Matthias is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Tonja Matthias's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tonja Matthias reassigns Medicare benefits to First Stop Chiropractic LLC (Fenton, MO). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Tonja Matthias's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tonja Matthias accept?

Health plans from Medica and UnitedHealthcare list Tonja Matthias as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Tonja Matthias was last updated on December 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.