Oa Associates, LLC

Oa Associates, LLC is a healthcare organization registered as Orthopaedic Surgery Physician in O Fallon, IL, holding Type 2 (organization) NPI 1649618554 since 2013. The authorized official on file is James Davis, Executive Director.

✓ Active NPI ✓ Valid NPI checksum

NPI	1649618554
Entity type	Organization (Type 2)
Legal business name	Oa Associates, LLC
Practice address	310 N SEVEN HILLS RD, O Fallon, IL, 62269
Phone	6186246281
Fax	6186247172
Enumeration date	2013-06-13
Last updated in NPPES	2013-06-13

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: 1649618554
Taxonomy: 207X00000X (Orthopaedic Surgery Physician)
Address: 310 N SEVEN HILLS RD, O Fallon, IL, 62269

Providers at this address

NPI	Name	Type	Specialty	Location
1194879288	Craig Lotz	Individual	Clinical Psychologist	O Fallon, IL
1124299615	Mid America Heart, PC	Organization	Cardiovascular Disease Physician	O Fallon, IL
1255634424	Ca Group, LLC	Organization	Cardiovascular Disease Physician	O Fallon, IL
1689097529	Msa Alliance, LLC	Organization	Sleep Medicine (Internal Medicine) Physician	O Fallon, IL
1396142139	PC Associates, LLC	Organization	Family Medicine Physician	O Fallon, IL

Verify this record

Cross-check NPI 1649618554 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 2013-06-13. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2013-06-13.