Dr. Gregory P. Johnston, MD
Interventional Radiology (Vascular & Interventional Radiology Physician)
251 E Huron St
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
At a glance
- In the NPI registry since
- 2020
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. What an NPI is
Education and training
- 2020Registered with an NPI (national billing number; not a license date)
Medicare’s Care Compare data doesn’t list this clinician’s medical school. 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 125.085128 - Student in an Organized Health Care Education/Training Program
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $26.33 in total to this clinician.
| Trisalus Life Sciences, Inc. | $26.33 |
|---|
| Food and Beverage | $26.33 |
|---|
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.