Quick answers
- Does Nicholas P. Xenopoulos accept Medicare assignment?
- Yes. Medicare's clinician data says Nicholas P. Xenopoulos 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 Nicholas P. Xenopoulos see?
- In 2024, CMS data shows 2,235 Original Medicare patients and 5,551 services for Nicholas P. Xenopoulos. This counts Original Medicare only and measures volume, not quality.
- What is Nicholas P. Xenopoulos's NPI number?
- 1568548006. 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 Nicholas P. Xenopoulos, 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 | 2,235 |
|---|---|
| Services billed to Medicare | 5,551 |
| Different services or procedures | 82 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)1,245 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)710 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)583 services
- Anticoagulant management of patient taking warfarin (93793)317 services
- Blood test, clotting time (85610)303 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%
- Arthritis57%
- Ischemic heart disease56%
- Atrial fibrillation38%
- Diabetes37%
Hospitals where Nicholas P. Xenopoulos works
Medicare's Facility Affiliation Data lists Nicholas P. Xenopoulos 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.
- Blount Memorial HospitalMaryville, TN · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 440011
- Cumberland Medical CenterCrossville, TN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 440009
- Fort Loudon Medical CenterLenoir City, TN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 440110
- Parkwest Medical CenterKnoxville, TN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 440173
- Starr Regional Medical Center AthensAthens, TN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 440068
Practice locations
Addresses where Nicholas P. Xenopoulos is enrolled with Medicare (CMS data updated October 2, 2026).
- 742 Middle Creek RdSevierville, TN 37862 (865) 446‑7000
- 9320 Parkwest BlvdKnoxville, TN 37923 (865) 373‑7100
- 9352 Park W BlvdKnoxville, TN 37923 (865) 694‑5700
Group practices
Medicare enrollment lists Nicholas P. Xenopoulos as a member of these groups (CMS data updated October 2, 2026).
- Covenant Medical Group Inc365 clinicians in the group
- Parkwest Medical Center57 clinicians in the group
- Leconte Medical Center3 clinicians in the group
Specialties
Other interventional cardiologists in Sevierville
Clinicians with the same Medicare primary specialty in Sevierville, TN — not a recommendation.
Other clinicians in Covenant Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1985 (41 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568548006 |
| 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