NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Nextgen Sleep South LLC

Sleep Medicine (Family Medicine) Physician in Oklahoma City, OK · enumerated 2017 · authorized official Karl Barreto, Cfo.

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

National Provider Identifier

1679093918

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Nextgen Sleep South LLC
Practice address 3418 Nw 135th St, Oklahoma City, OK, 73120
Enumeration date Jun 27, 2017
Last updated in NPPES Jun 27, 2017

Taxonomy & classification

207QS1201X Sleep Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 22192 (OK) Primary

Authorized official

Name Karl Barreto
Title Cfo

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 the NPI number for Nextgen Sleep South LLC?
The NPI for Nextgen Sleep South LLC is 1679093918, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Nextgen Sleep South LLC?
NPPES lists Karl Barreto (Cfo) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-06-27.