Doctor profile · Federal record
Dr. Swaminadhan Gnanashanmugam, M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (CMS: Thoracic Surgery) · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Saint Helena, CA
- NPI 1073765517
- Accepts Medicare
- 18 yrs in practice
- Licensed in 3 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
10 Woodland RD
Saint Helena, CA 945749554
(650) 804-8093 - Additional location
-
1350 Hickory St
Melbourne, FL 329013224
(321) 434-3455 - Additional location
-
17360 Brookhurst Street
Fountain Valley, CA 927083720
(714) 665-1797
fax (714) 665-4680 - Mailing address
-
5082 Dupont Dr
Santa Rosa, CA 954093743
Credentials & registration
- NPI registered
- October 2008 — 18 yrs on file
- Profile last updated
- November 11, 2025
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 208G00000X — NUCC code
- State licenses (3)
- California #A171765 · Illinois #036157660 · Florida #ME173914
- Medicaid
- FL #128981100
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1073765517. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
127
Distinct HCPCS
3
Medicare allowed
$55,299
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
33361 |
Replacement of aortic valve through the skin and femoral artery | 62 | 62 | $804 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 48 | 40 | $52 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 17 | 17 | $173 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 30. This provider delivers 4.2× the peer median.Open Payments
Industry payments received
All-time total
$2,018
Transactions
27
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Medtronic, Inc. | 11 | $665.02 | |
| Edwards Lifesciences Corporation | 4 | $550.12 | |
| ATRICURE, INC. | 9 | $311.81 | |
| W. L. Gore & Associates, Inc. | 1 | $267.99 | |
| Abbott Laboratories | 1 | $194.85 | |
| ABIOMED | 1 | $28.23 |
By nature of payment
Frequently asked questions
What is Dr. Swaminadhan Gnanashanmugam's medical specialty?
Dr. Swaminadhan Gnanashanmugam practices Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Saint Helena, CA.
Where does Dr. Swaminadhan Gnanashanmugam practice?
Dr. Swaminadhan Gnanashanmugam practices at 10 Woodland RD, Saint Helena, CA 945749554. Office phone: 6508048093.
What is Dr. Swaminadhan Gnanashanmugam's NPI?
Dr. Swaminadhan Gnanashanmugam's National Provider Identifier (NPI) is 1073765517, issued by NPPES.
Does Dr. Swaminadhan Gnanashanmugam accept Medicare assignment?
Yes. Dr. Swaminadhan Gnanashanmugam accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Swaminadhan Gnanashanmugam commonly perform?
Top Medicare-reported procedures in 2023: Replacement of aortic valve through the skin and femoral artery (HCPCS 33361); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.