Diagnostic Testing Services, LLC
NPI 1528036621 · Sleep Disorder Diagnostic Clinic/Center · Chattanooga, TN
Enrolled with Medicare as Part B Supplier - Independent Diagnostic Testing Facility (idtf) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diagnostic Testing Services, LLC is a Sleep Disorder Diagnostic Clinic/Center organization in Chattanooga, TN (NPI 1528036621).
Provider details
- NPI number
- 1528036621
- Entity type
- Organization
- Primary specialty
- Sleep Disorder Diagnostic Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- David Baxter, President(931) 375-1775
Specialties & taxonomies
Ambulatory Health Care Facilities
Suppliers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
43 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Sleep Study in Sleep Lab (6 Years Or Older)95810 | 18 | $445 |
| Sleep Study in Sleep Lab With Continuous Airway Pressure (6 Years Or Older)95811 | 14 | $489 |
| 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 SaturationG0399 | 11 | $49 |
Typical Medicare-allowed amounts for these services range $49–$489 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-14
- Last updated
- 2026-06-03
- Certified
- 2026-06-03
Frequently asked questions
- What is Diagnostic Testing Services, LLC's NPI number?
- Diagnostic Testing Services, LLC's National Provider Identifier (NPI) is 1528036621, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Diagnostic Testing Services, LLC?
- Diagnostic Testing Services, LLC is classified in the NPPES registry as Sleep Disorder Diagnostic Clinic/Center (Ambulatory Health Care Facilities).
- Where is Diagnostic Testing Services, LLC located?
- Diagnostic Testing Services, LLC's practice location on file with NPPES is 7155 Lee Hwy, Chattanooga, TN 37421-0800.
- What is Diagnostic Testing Services, LLC's phone number?
- The practice phone number listed in the NPPES registry for Diagnostic Testing Services, LLC is (423) 499-2637.
- Does Diagnostic Testing Services, LLC accept Medicare?
- Diagnostic Testing Services, LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Diagnostic Testing Services, LLC?
- The authorized official listed on Diagnostic Testing Services, LLC's NPPES record is David Baxter, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Diagnostic Testing Services, LLC's NPI active?
- Yes — Diagnostic Testing Services, LLC's NPI (1528036621) is active in the NPPES registry as of the last update on 2026-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.