Gillian Alex, M.D.
NPI 1851730907ActiveIndividual· Thoracic Surgery (Cardiothoracic Vascular Surgery)· Chicago, IL
Thoracic Surgery (Cardiothoracic Vascular Surgery) (M.D.) in Chicago, Illinois, trained at University of Texas Medical School at Houston (class of 2013). Mostly services rather than prescriptions: Medicare paid $101,066 for 167 patients in 2024, with only 16 Part D claims. Intuitive Surgical, Inc. was the largest of 4 companies reporting payments in 2025, $4,800 in all, mostly education.
Overview
| NPI | 1851730907 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 21, 2013 |
| Last updated in NPPES | May 3, 2024 |
| Certified by provider | May 3, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Thoracic Surgery (Cardiothoracic Vascular Surgery) Primary | 208G00000X | 036147043 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Thoracic Surgery (IL); Practitioner - Thoracic Surgery (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 167 |
|---|---|
| Services billed | 306 across 59 procedure codes |
| Paid by Medicare | $101,066 |
Part D prescriptions in 2024
| Prescriptions (claims) | 16 · 16 30-day fills |
|---|---|
| Patients | 15 |
| Total drug cost | $121.81 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at Houston |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Thoracic Surgery |
| Telehealth | Offers telehealth |
Medical group
- Rush University Medical GroupChicago, IL · 1,551 clinicians
Hospital affiliations
- Copley Memorial HospitalAurora, IL
- Rush University Medical CenterChicago, IL
- Silver Cross Hospital and Medical CentersNew Lenox, IL
Industry payments (Open Payments)
- 2025$4,800 · 21 payments from 4 companies
- 2024$13,741 · 43 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $4,420 | 18 |
| On Target Laboratories, Inc | $149.90 | 1 |
| Merit Medical Systems Inc | $124.34 | 1 |
| Medtronic, Inc. | $105.62 | 1 |
What the 2025 payments were for
- Education$2,500 · 1 payment
- Travel and Lodging$1,725 · 6 payments
- Food and Beverage$574.75 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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