Oa Associates, LLC

Oa Associates, LLC is a healthcare organization registered as Orthopaedic Surgery Physician in O Fallon, IL, holding Type 2 (organization) NPI 1003137662 since 2010. The authorized official on file is James Davis, Executive Director.

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NPI	1003137662
Entity type	Organization (Type 2)
Legal business name	Oa Associates, LLC
Parent organization	Oa Associates, LLC
Practice address	800 E HIGHWAY 50, O Fallon, IL, 62269
Phone	6182349884
Fax	6182359020
Enumeration date	2010-06-17
Last updated in NPPES	2013-02-22

Authorized official

Name	James Davis
Title	Executive Director
Phone	6182574644

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
207X00000X	Orthopaedic Surgery Physician	Primary	—	—

Copy-ready billing details

Provider: Oa Associates, LLC
NPI: 1003137662
Taxonomy: 207X00000X (Orthopaedic Surgery Physician)
Address: 800 E HIGHWAY 50, O Fallon, IL, 62269

Providers at this address

NPI	Name	Type	Specialty	Location
1730174277	Rosel Calong	Individual	Obstetrics & Gynecology Physician	O Fallon, IL
1962497461	Arthur Smith	Individual	Gynecology Physician	O Fallon, IL
1043523269	Msa Alliance, LLC	Organization	Rheumatology Physician	O Fallon, IL

Verify this record

Cross-check NPI 1003137662 against the authoritative CMS record: view Oa Associates, LLC on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Where is Oa Associates, LLC located?

The practice location on file with NPPES is in O Fallon, IL.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2013-02-22. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2013-02-22.