Diagnostic Testing Services, LLC
Diagnostic Testing Services, LLC is a healthcare organization registered as Sleep Disorder Diagnostic Clinic/Center in Chattanooga, TN, holding Type 2 (organization) NPI 1528036621 since 2006. The authorized official on file is David Baxter, President.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1528036621 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Diagnostic Testing Services, LLC |
| Practice address | 7155 LEE HWY, SUITE 400, Chattanooga, TN, 37421 |
| Phone | 4234992637 |
| Fax | 4234992636 |
| Enumeration date | 2006-03-14 |
| Last updated in NPPES | 2026-06-03 |
Authorized official
| Name | David Baxter |
|---|---|
| Title | President |
| Phone | 9313751775 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 332B00000X | Durable Medical Equipment & Medical Supplies | Secondary | — | — |
| 261QS1200X | Sleep Disorder Diagnostic Clinic/Center | Primary | — | — |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 3790940 | Medicaid | TN | — |
Copy-ready billing details
Provider: Diagnostic Testing Services, LLC NPI: 1528036621 Taxonomy: 261QS1200X (Sleep Disorder Diagnostic Clinic/Center) Address: 7155 LEE HWY, SUITE 400, Chattanooga, TN, 37421
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1467446005 | Allan Davis | Individual | Specialist | Chattanooga, TN |
Verify this record
Cross-check NPI 1528036621 against the authoritative CMS record: view Diagnostic Testing Services, 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
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Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2026-06-03.