Gillian Alex, M.D.
NPI 1851730907 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Thoracic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gillian Alex, M.D. is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Chicago, IL (NPI 1851730907).
Provider details
- NPI number
- 1851730907
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036147043 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
124 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Removal of Lymph Nodes of Chest Cavity Using an Endoscope32674 | 32 | $232 |
| Initial Removal of Wedge of Lung Tissue Using an Endoscope32666 | 22 | $850 |
| Fluoroscopic Guidance for Insertion Or Removal of Central Vein Access Device77001 | 16 | $19 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 15 | $132 |
| Exam of Lung With Removal of Lung Lobe Using an Endoscope32663 | 14 | $1,528 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$13,623 across 41 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 880 W Central Rd Ste 5000Arlington Heights, IL 60005-2355Phone: (847) 618-3800Fax: (847) 618-3809
Registry dates
- Enumerated
- 2013-06-21
- Last updated
- 2024-05-03
- Certified
- 2024-05-03
Frequently asked questions
- What is Gillian Alex's NPI number?
- Gillian Alex's National Provider Identifier (NPI) is 1851730907, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gillian Alex's specialty?
- Gillian Alex is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Gillian Alex located?
- Gillian Alex's practice location on file with NPPES is 1653 W Congress Pkwy, Chicago, IL 60612-3833.
- What is Gillian Alex's phone number?
- The practice phone number listed in the NPPES registry for Gillian Alex is (617) 775-4573.
- Does Gillian Alex accept Medicare?
- Gillian Alex is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gillian Alex's NPI active?
- Yes — Gillian Alex's NPI (1851730907) is active in the NPPES registry as of the last update on 2024-05-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.