Karen Leonia Walker, M.D.
NPI 1013208453ActiveIndividual· Thoracic Surgery (Cardiothoracic Vascular Surgery)· Orlando, FL
Thoracic Surgery (Cardiothoracic Vascular Surgery) (M.D.) with Orlando Health Medical Group Inc, practicing in Orlando, Florida. Mostly services rather than prescriptions: Medicare paid $175,383 for 214 patients in 2024, with only 30 Part D claims. Medtronic, Inc. was the largest of 9 companies reporting payments in 2025, $1,984 in all, mostly food and beverage. Lists Orlando Health and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1013208453 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 19, 2011 |
| Last updated in NPPES | Feb 18, 2020 |
| Certified by provider | Feb 18, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Thoracic Surgery (Cardiothoracic Vascular Surgery) Primary | 208G00000X | ME142884 | FL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Thoracic Surgery (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 214 |
|---|---|
| Services billed | 502 across 57 procedure codes |
| Paid by Medicare | $175,383 |
Part D prescriptions in 2024
| Prescriptions (claims) | 30 · 36 30-day fills |
|---|---|
| Patients | 24 |
| Total drug cost | $200.32 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Thoracic Surgery |
Medical group
- Orlando Health Medical Group IncWindermere, FL · 2,287 clinicians
Hospital affiliations
- Orlando HealthOrlando, FL
- Orlando Health South Lake HospitalClermont, FL
- Orlando Health-Health Central HospitalOcoee, FL
Other facilities
- Kassy Home HealthHome health agency · Maitland, FL
- Mederi CaretendersHome health agency · Longwood, FL
Industry payments (Open Payments)
- 2025$1,984 · 27 payments from 9 companies
- 2024$11,553 · 44 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $590.98 | 9 |
| Aop Health US, LLC | $466.76 | 1 |
| Atricure, Inc. | $356.02 | 3 |
| Abiomed | $183.16 | 6 |
| Helios Cardio Inc | $145.91 | 1 |
What the 2025 payments were for
- Food and Beverage$1,984 · 27 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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