Quick answers
- Which hospitals does Petros G. Leinonen work at?
- Medicare's official clinician data lists Petros G. Leinonen at 3 hospitals: Fort Sanders Regional Medical Center, Methodist Medical Center of Oak Ridge and Parkwest Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Petros G. Leinonen see patients?
- Medicare's clinician data lists 3 practice locations, including Knoxville, TN and Oak Ridge, TN. Call before your visit to confirm the address.
- What is Petros G. Leinonen's specialty?
- Medicare lists Cardiac Surgery as the primary specialty, and also Thoracic Surgery.
- Does Petros G. Leinonen accept Medicare assignment?
- Yes. Medicare's clinician data says Petros G. Leinonen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Petros G. Leinonen?
- (865) 632-5900, as listed in official Medicare / NPI Registry data.
- What is Petros G. Leinonen's NPI number?
- 1891765848. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Petros G. Leinonen works
Medicare's Facility Affiliation Data lists Petros G. Leinonen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Fort Sanders Regional Medical CenterKnoxville, TN · Acute Care Hospital · CCN 440125
- Methodist Medical Center of Oak RidgeOak Ridge, TN · Acute Care Hospital · CCN 440034
- Parkwest Medical CenterKnoxville, TN · Acute Care Hospital · CCN 440173
Practice locations
Addresses where Petros G. Leinonen is enrolled with Medicare (CMS data updated 2026-10-02).
- 9125 Cross Park Dr, Suite 200Knoxville, TN 37923 (865) 632‑5900
- 988 Oak Ridge Tpke, Suite 200Oak Ridge, TN 37830 (865) 483‑4366
- 988 Oak Ridge Tpke, Suite 380Oak Ridge, TN 37830 (865) 481‑0183
Group practices
Medicare enrollment lists Petros G. Leinonen as a member of these groups (CMS data updated 2026-10-02).
- Covenant Medical Group Inc365 clinicians in the group
- East Tennessee Cardiovascular Surgery Group PC19 clinicians in the group
Specialties
- Cardiac Surgeryprimary
- Thoracic Surgeryalso
Other cardiac surgeons in Knoxville
Clinicians with the same Medicare primary specialty in Knoxville, TN — not a recommendation.
Clinician information
| Graduation year | 2005 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891765848 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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