Petros Leinonen, M.D.
NPI 1891765848 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Oak Ridge, TN
Enrolled with Medicare as Practitioner - Cardiac Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Petros Leinonen, M.D. is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Oak Ridge, TN (NPI 1891765848).
Provider details
- NPI number
- 1891765848
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD22537 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
45 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Coronary Artery Bypass Using Artery Graft, 1 Graft33533 | 19 | $1,636 |
| Coronary Artery Bypass Using Vein Or Artery Graft, 2 Grafts33518 | 14 | $357 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 12 | $160 |
Typical Medicare-allowed amounts for these services range $160–$1,636 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$71 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 3851 Roger Brooke DrBrooke Army Medical Center Mche-Qd(creds)Fort Sam Houston, TX 78234-4501Phone: (210) 916-2412
Registry dates
- Enumerated
- 2006-01-24
- Last updated
- 2018-06-11
Frequently asked questions
- What is Petros Leinonen's NPI number?
- Petros Leinonen's National Provider Identifier (NPI) is 1891765848, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Petros Leinonen's specialty?
- Petros Leinonen is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Petros Leinonen located?
- Petros Leinonen's practice location on file with NPPES is 988 Oak Ridge Tpke Ste 380, Oak Ridge, TN 37830.
- What is Petros Leinonen's phone number?
- The practice phone number listed in the NPPES registry for Petros Leinonen is (865) 481-0183.
- Does Petros Leinonen accept Medicare?
- Petros Leinonen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Petros Leinonen's NPI active?
- Yes — Petros Leinonen's NPI (1891765848) is active in the NPPES registry as of the last update on 2018-06-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.