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DIAGNOSTIC TESTING SERVICES, LLC
NPI 1528036621
Clinic/Center - Sleep Disorder Diagnostic in Chattanooga, TN

Active since March 14, 2006
7155 LEE HWY, SUITE 400, CHATTANOOGA, TN 37421(423) 499-2637(423) 499-2636 Get Directions Write a Review

NPPES record last updated: June 3, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jun 3, 2026, Nov 25, 2025, Sep 11, 2025 and 1 more (4 updates tracked since 2020).

About Diagnostic Testing Services, Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DIAGNOSTIC TESTING SERVICES, LLC (NPI 1528036621) is a healthcare organization registered as a sleep disorder diagnostic in Chattanooga, Tennessee and active in the NPI registry since March 2006. The organization lists David R Baxter, President, as its authorized official.

NPPES Registry Identity

NPI1528036621
Entity TypeOrganization
Primary Taxonomy261QS1200X
Legal Business NameDIAGNOSTIC TESTING SERVICES, LLC
Location Address7155 LEE HWY, SUITE 400Chattanooga, TN 37421-0800
Mailing Address7155 Lee Hwy Ste 400Chattanooga, TN 37421-0803 · (423) 499-2637 · Fax (423) 499-2636
Phone(423) 499-2637
Fax(423) 499-2636
Organization SubpartNo
Authorized OfficialDavid R BaxterPresident · (931) 375-1775
Enumeration DateMarch 14, 2006
Last NPPES UpdateJune 3, 20264 updates tracked since enumeration
NPPES CertifiedJune 3, 2026
✔ NPI 1528036621 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinic/Center · Sleep Disorder DiagnosticAmbulatory Health Care Facilities
Taxonomy Code261QS1200X
Also ListedDurable Medical Equipment & Medical SuppliesTaxonomy 332B00000X
7155 LEE HWY, Chattanooga, TN 37421
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Other Identifiers 1

Medicaid3790940TN

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health and more.Insurance ›

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Sleep study in sleep lab (6 years or older) 95810
A sleep study in a sleep lab is a non-invasive overnight test that monitors your body while you sleep. It helps doctors understand your sleep patterns and identify any issues like sleep apnea or insomnia. You'll be connected to equipment that tracks your heart rate, brain waves, breathing, and movements.
18 services18 patients
Sleep study in sleep lab with continuous airway pressure (6 years or older) 95811
A sleep study in a sleep lab with continuous airway pressure is a test for individuals aged 6 and above. It monitors your sleep patterns to check for disorders like sleep apnea. Continuous airway pressure helps keep your airways open while you sleep, improving your breathing.
14 services14 patients
Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation G0399
A Home Sleep Test (HST) with a Type III Portable Monitor is an unattended test that records your breathing, heart rate, and oxygen levels during sleep. This test uses a minimum of 4 channels to monitor these parameters, helping to diagnose sleep disorders.
11 services11 patients

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ALLAN ERIC DAVIS MD
Specialist
7155 LEE HWY, SUITE 600
CHATTANOOGA, TN 37421
Hamilton County (423) 499-6199
SIBAJI SHOME MD PLLC
Internal Medicine (Pulmonary Disease)
7155 LEE HWY, SUITE 400
CHATTANOOGA, TN 37421
Hamilton County (423) 499-2637

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Diagnostic Testing Services, LLC's NPI number?

The NPI number for Diagnostic Testing Services, LLC is 1528036621. It was assigned to this organization in the NPPES registry on March 14, 2006.

Where is Diagnostic Testing Services, LLC located?

Diagnostic Testing Services, LLC is located at 7155 Lee Hwy Suite 400, Chattanooga, TN 37421. The listed phone number is (423) 499-2637.

What is Diagnostic Testing Services, LLC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Sleep Disorder Diagnostic, with taxonomy code 261QS1200X.

What insurance does Diagnostic Testing Services, LLC accept?

Health plans from Alliant Health Plans, Inc., Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Magnolia Health and Ambetter of Alabama and 2 other insurers list Diagnostic Testing Services, LLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Diagnostic Testing Services, LLC was last updated on June 3, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.