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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MADISON LEIGH FALLIS DO
NPI 1831979491
Military Health Care Provider in O Fallon, IL

Active since October 02, 2023PECOS Enrolled
3 SAINT ELIZABETH BLVD STE 4000, O FALLON, IL 62269(618) 256-9355(618) 206-2332 Get Directions Write a Review

NPPES record last updated: September 10, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 10, 2026, Dec 15, 2024, Oct 2, 2023 (3 updates tracked since 2023).

About Madison Leigh Fallis Do NPPES

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

MADISON LEIGH FALLIS DO (NPI 1831979491) is an individual military health care provider provider in O Fallon, Illinois and active in the NPI registry since October 2023. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1831979491
Entity TypeIndividualFemale
Primary Taxonomy171000000X
Provider Legal NameMADISON LEIGH FALLISCredential: DO
Location Address3 SAINT ELIZABETH BLVD STE 4000O Fallon, IL 62269-1284
Mailing Address3 Saint Elizabeth Blvd Ste 4000O Fallon, IL 62269-1284 · (618) 256-9355 · Fax (618) 206-2332
Phone(618) 256-9355
Fax(618) 206-2332
Sole ProprietorNo
Enumeration DateOctober 2, 2023
Last NPPES UpdateSeptember 10, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 10, 2026
✔ NPI 1831979491 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMilitary Health Care ProviderOther Service Providers
Taxonomy Code171000000X
Definition
Active duty military health care providers not otherwise classified who need to be separately identified for operational, clinical, or administrative processes.
3 SAINT ELIZABETH BLVD STE 4000, O Fallon, IL 62269
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Madison Leigh Fallis Do 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.

Other Providers at the Same Location NPPES 20

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

MARA GRACE DOWNING MD
Student in an Organized Health Care Education/Training Program
3 SAINT ELIZABETH BLVD STE 4000
O FALLON, IL 62269
St. Clair County (618) 233-5480
DR. NOAH M COOPERSTEIN MD
Family Medicine
3 SAINT ELIZABETH BLVD STE 4000
O FALLON, IL 62269
St. Clair County (618) 256-7311
DR. PATRICK BLOECHER MD
Family Medicine
3 SAINT ELIZABETH BLVD STE 4000
O FALLON, IL 62269
St. Clair County (618) 233-7880
BENJAMIN F WOOD MD
Student in an Organized Health Care Education/Training Program
3 SAINT ELIZABETH BLVD STE 4000
O FALLON, IL 62269
St. Clair County (618) 233-5480
SALSAPELA HIYTHAM SHABAN MD
Student in an Organized Health Care Education/Training Program
3 SAINT ELIZABETH BLVD STE 4000
O FALLON, IL 62269
St. Clair County (618) 233-5480
MARIA OCHIAI
Military Health Care Provider
3 SAINT ELIZABETH BLVD STE 4000
O FALLON, IL 62269
St. Clair County (618) 256-9355
LUKE BRECHNER
Military Health Care Provider
3 SAINT ELIZABETH BLVD STE 4000
O FALLON, IL 62269
St. Clair County (618) 256-9355
ALEX BRANDON BELONGY
General Practice
3 SAINT ELIZABETH BLVD STE 4000
O FALLON, IL 62269
St. Clair County (618) 256-9355

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 Madison Fallis's NPI number?

The NPI number for Madison Fallis is 1831979491. It was assigned to this individual provider in the NPPES registry on October 2, 2023.

Where is Madison Fallis located?

Madison Fallis practices at 3 Saint Elizabeth Blvd Ste 4000, O Fallon, IL 62269. The listed phone number is (618) 256-9355.

What is Madison Fallis's specialty?

The primary specialty registered for this NPI is Military Health Care Provider with taxonomy code 171000000X.

Is Madison Fallis enrolled in Medicare?

Yes. Madison Fallis is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Madison Fallis was last updated on September 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 days 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.