Swaminadhan Gnanashanmugam, M.D.
NPI 1073765517ActiveIndividual· Thoracic Surgery (Cardiothoracic Vascular Surgery)· Saint Helena, CA
Thoracic Surgery (Cardiothoracic Vascular Surgery) (M.D.) in Saint Helena, California, trained at Northwestern University Feinberg Medical School (class of 2008). Medicare paid $63,447 for services to 117 patients in 2024. Medtronic, Inc. was the largest of 10 companies reporting payments in 2025, $16,697 in all, mostly travel and lodging.
Overview
| NPI | 1073765517 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 15, 2008 |
| Last updated in NPPES | Nov 11, 2025 |
| Certified by provider | Nov 11, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Thoracic Surgery (Cardiothoracic Vascular Surgery) Primary | 208G00000X | A171765 | CA |
| Thoracic Surgery (Cardiothoracic Vascular Surgery) | 208G00000X | 036157660 | IL |
| Thoracic Surgery (Cardiothoracic Vascular Surgery) | 208G00000X | ME173914 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Thoracic Surgery (CA); Practitioner - Thoracic Surgery (FL); Practitioner - Thoracic Surgery (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 117 |
|---|---|
| Services billed | 251 across 80 procedure codes |
| Paid by Medicare | $63,447 |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Thoracic Surgery |
| Secondary specialties | Cardiac Surgery |
Medical groups
- Providence Medical FoundationVictorville, CA · 1,466 clinicians
- Adventist Health Physicians NetworkSaint Helena, CA · 628 clinicians
- Sacred Heart Health System IncPensacola, FL · 389 clinicians
Hospital affiliations
- Adventist Health and RideoutMarysville, CA
- Adventist Health St HelenaSaint Helena, CA
- Providence Santa Rosa Memorial HospitalSanta Rosa, CA
- Providence St Joseph HospitalEureka, CA
Industry payments (Open Payments)
- 2025$16,697 · 63 payments from 10 companies
- 2024$2,018 · 27 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $13,323 | 28 |
| W. L. Gore & Associates, Inc. | $1,508 | 12 |
| Abiomed | $1,310 | 9 |
| Atricure, Inc. | $248.94 | 6 |
| Edwards Lifesciences Corporation | $91.60 | 2 |
What the 2025 payments were for
- Travel and Lodging$14,814 · 23 payments
- Food and Beverage$1,883 · 40 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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