Quick answers
- Does Stephen Tonks accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen Tonks accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Stephen Tonks see?
- In 2024, CMS data shows 511 Original Medicare patients and 3,741 services for Stephen Tonks. This counts Original Medicare only and measures volume, not quality.
- What is Stephen Tonks's NPI number?
- 1689937989. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Stephen Tonks, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 511 |
|---|---|
| Services billed to Medicare | 3,741 |
| Different services or procedures | 94 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)2,257 services
- Ultrasound study of arm and leg arteries (93922)303 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)132 services
- Ultrasound of leg arteries or artery grafts (93925)129 services
- Ultrasound of both sides of head and neck blood flow (93880)99 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Ischemic heart disease44%
- Diabetes42%
- Chronic kidney disease39%
Hospitals where Stephen Tonks works
Medicare's Facility Affiliation Data lists Stephen Tonks at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Fort Loudon Medical CenterLenoir City, TN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 440110
- Fort Sanders Regional Medical CenterKnoxville, TN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 440125
- Parkwest Medical CenterKnoxville, TN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 440173
- Physicians Regional Medical CenterPowell, TN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 440120
Practice locations
Addresses where Stephen Tonks is enrolled with Medicare (CMS data updated October 2, 2026).
- 6408 Papermill DrKnoxville, TN 37919 (865) 588‑8229
- 7714 Conner Rd, Suite 103Powell, TN 37849 (865) 938‑8121
Group practices
Medicare enrollment lists Stephen Tonks as a member of this group (CMS data updated October 2, 2026).
- Premier Surgical Associates PLLC59 clinicians in the group
Specialties
- Vascular Surgeryprimary
Other vascular surgeons in Knoxville
Clinicians with the same Medicare primary specialty in Knoxville, TN — not a recommendation.
Other clinicians in Premier Surgical Associates PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Alabama School Of Medicine |
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689937989 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians