Dr. Sameer A. Ansari, MD, PHD
Interventional Radiology (Vascular & Interventional Radiology Physician)
259 E Erie St Ste 1950
Chicago, IL 60611
Who else practices at this address →
Cook County includes primary care (3% of residents) and mental health (4% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Medical school
- Jefferson Medical College of Thomas Jefferson University (2000)
- Years since graduation
- 26
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 97
Licensed in Illinois since 2002, according to the Illinois Department of Financial and Professional Regulation. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2000Medical school: Jefferson Medical College of Thomas Jefferson University
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Vascular & Interventional Radiology Physician primary
IL license 036107893 (first issued 2002; active) -
Diagnostic Radiology Physician
IL license 036107893 (first issued 2002; active) -
Neuroradiology Physician
IL license 036107893 (first issued 2002; active)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Northwestern Memorial Hospital Chicago, IL
- Northwestern Lake Forest Hospital Lake Forest, IL
Medical groups
- Northwestern Medical Faculty Foundation (4,503 clinicians)
- Endeavor Health Medical Group (3,350 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 97
- Services billed
- 269
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Fluoroscopic guidance for spine or back muscle injection | 32 | 21 |
| Administration of chemotherapy into fluid-filled space between the tissue that cover the brain and spinal cord | 24 | 14 |
| Removal of spinal fluid with lower back spinal tap for diagnostic test using imaging guidance | 16 | 15 |
| Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist | 14 | 13 |
| Removal of blood clot and injection to dissolve blood clot from head artery using fluoroscopic guidance | 13 | 12 |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 11 | 11 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Payments from drug and device companies
In 2025, 10 companies reported 25 payments worth $70,461 in total to this clinician.
| Microvention, Inc. | $34,157 |
|---|---|
| Hyperfine Operations, Inc. | $14,900 |
| Perfuze Limited | $11,749 |
| Boston Scientific Corporation | $7,486 |
| Imperative Care, Inc | $1,575 |
| Stryker Corporation | $230 |
| Penumbra, Inc. | $129 |
| Balt USA, LLC | $111 |
| Consulting Fee | $69,209 |
|---|---|
| Food and Beverage | $909 |
| Travel and Lodging | $343 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Hyperfine Operations, Inc. Mar 19, 2025 | Consulting Fee Swoop · Portable MRI | $14,900 |
| Microvention, Inc. Jun 25, 2025 | Consulting Fee SOFIA 6F-131CM STR · NEUROLOGICAL PRODUCT | $11,000 |
| Microvention, Inc. Apr 16, 2025 | Consulting Fee SOFIA 6F-131CM STR · NEUROLOGICAL PRODUCT | $10,500 |
| Microvention, Inc. Jan 23, 2025 | Consulting Fee SOFIA EX 5F - 105CM STR · NEUROLOGICAL PRODUCT | $10,000 |
| Perfuze Limited Aug 21, 2025 | Consulting Fee | $7,374 |
| Boston Scientific Corporation Oct 9, 2025 | Consulting Fee TheraSphere Y90 Glass Microspheres 7.0 GBq (US Commercial) · TheraSphere Y90 Glass Microspheres 7.0 GBq (US Commercial)_PI | $6,125 |
| Perfuze Limited Feb 6, 2025 | Consulting Fee | $4,374 |
| Microvention, Inc. Sep 24, 2025 | Consulting Fee STENT · NEUROLOGICAL PRODUCT | $1,860 |
| Imperative Care, Inc Dec 30, 2025 | Consulting Fee ZOOM 88-T LARGE DISTAL PLATFORM · VASCULAR | $1,575 |
| Boston Scientific Corporation Oct 9, 2025 | Consulting Fee TheraSphere Y90 Glass Microspheres 7.0 GBq (US Commercial) · TheraSphere Y90 Glass Microspheres 7.0 GBq (US Commercial)_PI | $1,000 |
All 13 payments other than meals, newest first
| Company | What it was for | Amount |
|---|---|---|
| Imperative Care, Inc Dec 30, 2025 | Consulting Fee ZOOM 88-T LARGE DISTAL PLATFORM · VASCULAR | $1,575 |
| Boston Scientific Corporation Oct 9, 2025 | Consulting Fee TheraSphere Y90 Glass Microspheres 7.0 GBq (US Commercial) · TheraSphere Y90 Glass Microspheres 7.0 GBq (US Commercial)_PI | $6,125 |
| Boston Scientific Corporation Oct 9, 2025 | Consulting Fee TheraSphere Y90 Glass Microspheres 7.0 GBq (US Commercial) · TheraSphere Y90 Glass Microspheres 7.0 GBq (US Commercial)_PI | $1,000 |
| Boston Scientific Corporation Oct 9, 2025 | Travel and Lodging TheraSphere Y90 Glass Microspheres 7.0 GBq (US Commercial) · TheraSphere Y90 Glass Microspheres 7.0 GBq (US Commercial)_PI · travel to Maple Grove, MN | $60.00 |
| Microvention, Inc. Sep 24, 2025 | Consulting Fee STENT · NEUROLOGICAL PRODUCT | $1,860 |
| Microvention, Inc. Sep 24, 2025 | Consulting Fee STENT · NEUROLOGICAL PRODUCT | $500 |
| Perfuze Limited Aug 21, 2025 | Consulting Fee | $7,374 |
| Boston Scientific Corporation Jul 21, 2025 | Travel and Lodging TheraSphere Y90 Glass Microspheres 7.0 GBq (US Commercial) · TheraSphere Y90 Glass Microspheres 7.0 GBq (US Commercial)_PI · travel to Maple Grove, MN · in-kind | $283 |
| Microvention, Inc. Jun 25, 2025 | Consulting Fee SOFIA 6F-131CM STR · NEUROLOGICAL PRODUCT | $11,000 |
| Microvention, Inc. Apr 16, 2025 | Consulting Fee SOFIA 6F-131CM STR · NEUROLOGICAL PRODUCT | $10,500 |
| Hyperfine Operations, Inc. Mar 19, 2025 | Consulting Fee Swoop · Portable MRI | $14,900 |
| Perfuze Limited Feb 6, 2025 | Consulting Fee | $4,374 |
| Microvention, Inc. Jan 23, 2025 | Consulting Fee SOFIA EX 5F - 105CM STR · NEUROLOGICAL PRODUCT | $10,000 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.
Industry-funded research
Named as a principal investigator on 1 industry-funded study in 2025, from 1 company. The companies reported $1,750 in research payments for these studies, mostly to the institutions running them.
- Ruptured Aneurysms Treated With Hydrogel Coils
Microvention, Inc. · Status unknown · NCT03252314
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.