DR. SWAMINADHAN GNANASHANMUGAM (M.D.) – Surgery Physician, NPI 1073765517
Surgery Physician
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NPPES metrics only — not quality of care.
242 THORACIC SURGERY in IL
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Provider Addresses for DR. SWAMINADHAN GNANASHANMUGAM (M.D.)
Chatelaine Tower Apartments, 215, East Chestnut Street, Magnificent Mile, Near North Side, Chicago, Cook County, Illinois, 60611, United States
APT 2003
CHICAGO, IL 606112359
Phone: (650) 804-8093
Type: Mailing
1350 Hickory St
Melbourne, FL 329013224
Phone: (321) 434-3455
Type: Location
17360 Brookhurst Street
Fountain Valley, CA 927083720
Phone: (714) 665-1797
Fax: (714) 665-4680
Type: Location
25 N WINFIELD RD STE 201
WINFIELD, IL 601901379
Phone: (630) 933-4480
Fax: (630) 933-6009
Type: Mailing
5082 DUPONT DR
SANTA ROSA, CA 954093743
Phone: (650) 804-8093
Fax: (650) 804-8093
Type: Mailing
10 WOODLAND RD
SAINT HELENA, CA 945749554
Phone: (650) 804-8093
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 64 Open Payments records for all available years, with a total value of $6,155.
Total Amount is formed as General ($6,155) + Research ($0) + Ownership ($0) = $6,155.
Last reported payment date: 2024-12-20 • Largest payer in this snapshot: Medtronic, Inc. ($2,987).
Total Amount
$6,155
General + Research + Ownership
Payments
64
Total payment records
General Amount
$6,155
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Medtronic, Inc. | $2,987 |
| Intuitive Surgical, Inc. | $1,250 |
| Edwards Lifesciences Corporation | $550 |
| ATRICURE, INC. | $541 |
| W. L. Gore & Associates, Inc. | $268 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2025-10-31
PECOS data refreshed: 2026-06-15
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 3 Medicare enrollment records; no due dates published yet.
Enrollment records
3
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20211206002303 | I | Thoracic Surgery | IL | TBD |
| I20230801003299 | I | Thoracic Surgery | CA | TBD |
| I20251031000843 | I | Thoracic Surgery | FL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 33361 | Replacement of aortic valve through the skin and femoral artery | 62 | 62 | $0 |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 48 | 40 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 17 | 17 | $0 |
Insurance plans in this area (ZIP 60611)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | CA | |
| - | CA | |
| - | CA | |
| - | WA | |
| - | ME | |
| - | CA | |
| - | CA | |
| Physician Assistant | CA | |
| - | CA | |
| Nurse Practitioner | CA |
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