NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Fresenius Medical Care of O'Fallon

End-Stage Renal Disease (ESRD) Treatment Clinic/Center in O Fallon, MO · enumerated 2006 · authorized official Rose Mattli, Clinical Manager.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1972522142

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Fresenius Medical Care of O'Fallon
Practice address 4663 Highway K, O Fallon, MO, 63368
Phone (636) 300-4036
Fax (636) 300-4065
Enumeration date Jul 19, 2006
Last updated in NPPES Aug 22, 2020

Taxonomy & classification

261QE0700X End-Stage Renal Disease (ESRD) Treatment Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Rose Mattli
Title Clinical Manager
Phone (636) 300-4036

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Fresenius Medical Care of O'Fallon?
Fresenius Medical Care of O'Fallon is registered in NPPES as a End-Stage Renal Disease (ESRD) Treatment Clinic/Center (its primary provider taxonomy).

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.