Atc, LLC

Atc, LLC is a healthcare organization registered as Pain Medicine (Physical Medicine & Rehabilitation) Physician in Chesterfield, MO, holding Type 2 (organization) NPI 1700980380 since 2006. The authorized official on file is Rick Sonne, Director.

✓ Active NPI ✓ Valid NPI checksum Organization subpart

NPI	1700980380
Entity type	Organization (Type 2)
Legal business name	Atc, LLC
Other name	<Unavail>
Parent organization	St. Luke'S Medical Group
Practice address	121 SAINT LUKES CENTER DR, STE 504, Chesterfield, MO, 63017
Phone	3145762334
Fax	3145905944
Enumeration date	2006-09-12
Last updated in NPPES	2012-11-02

Authorized official

Name	Rick Sonne
Title	Director
Phone	3145762490

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
2081P2900X	Pain Medicine (Physical Medicine & Rehabilitation) Physician	Primary	—	—

Copy-ready billing details

Provider: Atc, LLC
NPI: 1700980380
Taxonomy: 2081P2900X (Pain Medicine (Physical Medicine & Rehabilitation) Physician)
Address: 121 SAINT LUKES CENTER DR, STE 504, Chesterfield, MO, 63017

Providers at this address

NPI	Name	Type	Specialty	Location
1750387510	James Walentynowicz	Individual	Orthopaedic Surgery Physician	Chesterfield, MO
1386644326	Fred Williams	Individual	Gastroenterology Physician	Chesterfield, MO
1669472700	Richard Riegel	Individual	Gastroenterology Physician	Chesterfield, MO
1851391890	Brian Mcmorrow	Individual	Gastroenterology Physician	Chesterfield, MO
1326048372	David Benage	Individual	Gastroenterology Physician	Chesterfield, MO
1962402925	Andrew Su	Individual	Gastroenterology Physician	Chesterfield, MO
1295736668	Loren Marshall	Individual	Gastroenterology Physician	Chesterfield, MO
1285635656	Jeffrey Mathews	Individual	Gastroenterology Physician	Chesterfield, MO

Verify this record

Cross-check NPI 1700980380 against the authoritative CMS record: view Atc, 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 Atc, LLC located?

The practice location on file with NPPES is in Chesterfield, MO.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2012-11-02. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-09. Provider record last updated 2012-11-02.