Radiology clinicNPI registry, October 2026

University Diagnostics-Halls

Registered legal name: University Diagnostics, LLC

7326 Maynardville Pike Ste 1100, Knoxville, TN 37938

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Practice-location phone (registry)

(865) 525-7100

As recorded by the organisation in NPPES, last updated 2 April 2026. Not verified by us.

Registry Record

NPI: 1427785047
Type: Radiology clinic/centre
Taxonomy codes: 2085R0202X (Diagnostic radiology (physician specialty code carried by an organisation)); 261QR0200X (Radiology clinic/center)
Practice location: 7326 Maynardville Pike Ste 1100, Knoxville, TN 37938
Telephone: (865) 525-7100
NPI issued: 3 August 2022 (4 years ago)
Record updated: 2 April 2026 (0 years ago)
NPI status: NPI active as reported by CMS 2026-10
Metro area: Knoxville, TN (metropolitan area, Knox County)
State: Tennessee (187 records statewide)
Map position: Census address match (rooftop level)
Snapshot: NPPES data dissemination file, 12 October 2026

What the Record Tells You

University Diagnostics-Halls, the trading name of University Diagnostics, LLC, is an NPI registry record for a radiology clinic/centre at 7326 Maynardville Pike Ste 1100 in Knoxville, Tennessee 37938. CMS issued NPI 1427785047 on 3 August 2022, and the organisation last updated its own entry on 2 April 2026. That is recent, so the contact details are likely current.

The record carries 2 imaging taxonomy codes: Diagnostic radiology (physician specialty code carried by an organisation) (2085R0202X) and Radiology clinic/center (261QR0200X). It registered as a radiology clinic without the MRI-specific code, so ask which modalities it operates before assuming an MRI is available.

Knoxville sits in the Knoxville, TN metropolitan area (Knox County), which has 32 imaging-centre records on the Tennessee side in the October 2026 file, 5 of them with the MRI code, out of 187 across Tennessee. The nearest alternatives in the registry are Koc Imaging-Powell (4.5 miles, Powell), Outpatient Diagnostic Center of Knoxville (8.2 miles, Knoxville) and University Diagnostics - Hall of Fame (8.2 miles, Knoxville), with 2 more within 9.9 miles.

For a cash-pay benchmark, our Tennessee freestanding-centre estimate is $450 to $1,100 for a typical single-region MRI. At Tennessee hospitals the cash price is measured rather than estimated: $123 to $1,911 for a brain MRI, median $710, from 34 of the 39 Tennessee hospitals whose own price files we have read, out of 78 in the state, files dated to August 2026. This centre's own prices are not in the registry: call (865) 525-7100 with the CPT code for your scan and ask for the self-pay rate, whether the radiologist's report is included, and the scanner's field strength.

What Medicare Paid This Centre (2024)

From CMS's public Medicare claims data for University Diagnostics-Halls (NPI 1427785047). Each row is a scan the centre billed to Medicare for at least 11 patients in 2024.

Scan	Medicare-approved amount	Centre's billed charge	National median approved
Head CT without contrast CPT 70450 · 45 Medicare scans	$56	$434	$98 (401 centres)
Brain MRI without contrast CPT 70551 · 76 Medicare scans	$112	$812	$186 (633 centres)
Brain MRI without and with contrast CPT 70553 · 127 Medicare scans	$173	$1,325	$291 (588 centres)
Chest X-ray, 2 views CPT 71046 · 276 Medicare scans	$20	$132	$31 (743 centres)
Chest CT without contrast CPT 71250 · 290 Medicare scans	$72	$546	$124 (492 centres)
Cervical spine MRI without contrast CPT 72141 · 66 Medicare scans	$86	$794	$165 (719 centres)
Lumbar spine MRI without contrast CPT 72148 · 105 Medicare scans	$107	$795	$180 (810 centres)
Shoulder or other arm joint MRI without contrast CPT 73221 · 21 Medicare scans	$121	$837	$190 (668 centres)
Knee or other leg joint MRI without contrast CPT 73721 · 45 Medicare scans	$109	$836	$187 (733 centres)
Abdomen and pelvis CT with contrast CPT 74177 · 170 Medicare scans	$196	$1,274	$286 (419 centres)
Abdominal ultrasound, complete CPT 76700 · 49 Medicare scans	$66	$472	$109 (647 centres)

The Medicare-approved amount is the full amount Medicare accepts for the scan: its own payment plus the patient's share (usually the 20% coinsurance). The billed charge is the centre's own list price on those claims, which Medicare does not pay. Both are averages over the year, and the national column is the median approved amount across every centre that billed Medicare for that scan outside a hospital.

Neither figure is a self-pay quote. If you are paying cash, ask the centre for its self-pay rate for your CPT code and whether the radiologist's report is included.

Source: Centers for Medicare & Medicaid Services, Medicare Physician & Other Practitioners - by Provider and Service, 2024 data, read 15 October 2026. CMS does not publish a centre and scan with fewer than 11 Medicare patients, so a scan missing here may still be offered.

Nearest Alternatives

The 5 closest imaging records to 7326 Maynardville Pike Ste 1100, straight-line distance. Rows without a link are name-classified radiology organisations or records outside a metro page.

Centre	City	Distance	Type	Phone (registry)
Koc Imaging-Powell	Powell, TN	4.5 mi	MRI centre	(865) 512-1301
Outpatient Diagnostic Center of Knoxville	Knoxville, TN	8.2 mi	Radiology org. (name-classified)	(865) 525-7100
University Diagnostics - Hall of Fame	Knoxville, TN	8.2 mi	Radiology clinic	(865) 525-7100
Vista Radiology, PC.	Knoxville, TN	8.8 mi	Radiology org. (name-classified)	(865) 595-4100
Koc Imaging-University	Knoxville, TN	9.9 mi	MRI centre	(865) 963-4110

Where it sits

University Diagnostics-Halls in amber, with the 5 nearest registry records in teal. Boundary drawn: Knox County outline.

Map data: OpenFreeMap, © OpenMapTiles, data from OpenStreetMap contributors. Boundaries: US Census Bureau cartographic boundary files.

Cash-Price Benchmark

Cash price for a brain MRI in Tennessee: 34 hospitals measured

Freestanding imaging centre, estimated

$450 to $1,100

Our own estimate. No imaging operator publishes a per-state cash price.

Hospital outpatient, measured

$123 to $1,911

Median $710 cash against a median gross charge of $3,823, from 34 of the 39 Tennessee hospitals whose own price files we have read, out of 78 in the state, files dated to August 2026.

Among the lowest-cost states in the US for MRI. The hospital figures are CPT 70551, brain MRI without contrast, taken from each hospital's own federal transparency file and attributed to the date that file carries. A further 2 hospitals publish a “cash price” that is its chargemaster restated rather than a discount, reaching $10,890; those are kept out of the band above and counted here instead. 1 more hospital lists this code at prices more than three times apart in the same file, from $86 to $86, so which row is the scan cannot be told from the file; they are excluded from the band and counted here. Hospitals whose file we could not read are named, not filled in (methodology).

What to ask when you call

The self-pay price for your exact CPT code (70551 brain, 72148 lumbar spine, 73221 or 73721 joint, without contrast), and whether the radiologist's report is included.
Scanner field strength (1.5T or 3T) and whether it is closed, wide-bore or open.
ACR or IAC accreditation, and who reads the images. The registry cannot tell you either.
Whether they accept an order from a telehealth referral if you have no local doctor.

Full list: cheap MRI, good MRI checklist.

Browse and compare

All 32 centres in Knoxville Tennessee imaging centres Questions to ask before booking Cash-pay MRI guide Imaging centre directory

Source: NPI registry records, status as reported by CMS, October 2026 file (NPPES data dissemination file dated 12 October 2026, download.cms.gov; US federal public data, no charge). NPPES is an identifier registry, not a licence register: an NPI does not validate licensure, accreditation or that a scanner is on site. Names, addresses and phones are as self-reported to CMS and many records have not been updated for years; confirm before you travel. Coordinates: US Census Bureau geocoder, ZIP-code centroid where the address did not match (flagged). Metro areas: 2023 Census core-based statistical areas by county. Price ranges: our methodology; hospital cash prices: each hospital's federal transparency file (45 CFR 180), where parsed. No centre pays to be listed and none is endorsed. Listed here in error, or want a correction? Email [email protected]. This page describes a registry record, not a review or recommendation of University Diagnostics-Halls.