Dr. Gregory A. Bortoff, M.D.
Radiology (Diagnostic Radiology Physician)
- Medicare participating
At a glance
- Years since graduation
- 32
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 3,417
Licensed in Illinois since 2025, 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
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
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
-
Diagnostic Radiology Physician primary
NC license 9501498 · IL license 036174695 (first issued 2025; active) · VA license 0101270598
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- St Francis Hospital - the Heart Center Roslyn, NY
- Good Samaritan Hospital Medical Center West Islip, NY
- Tristar Centennial Medical Center Nashville, TN
- Blessing Hospital Quincy, IL
- Uphs Marquette Dlp Hospital Marquette, MI
Medical groups
- Radiology Alliance PC (455 clinicians)
- Blessing Hospital (421 clinicians)
- Northside Radiology Associates LLC (385 clinicians)
- Hurley Medical Center (342 clinicians)
- Imaging Associates of Indiana PC (301 clinicians)
- Columbus Radiology Corp (292 clinicians)
- Empire State Radiology P C (268 clinicians)
- Specialists in Medical Imaging Sc (234 clinicians)
- Greensboro Radiology PA (231 clinicians)
- Imaging Associates of Michigan PLLC (158 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
- 3,417
- Services billed
- 18,301
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | 7,725 | 75 |
| Injection, gadobutrol, 0.1 ml | 7,600 | 75 |
| Screening mammography | 1,083 | 1,078 |
| Screening 3d breast mammography | 1,074 | 1,069 |
| X-ray of chest, 1 view | 407 | 394 |
| Ct scan of chest without contrast | 380 | 371 |
| Low dose ct scan of chest for lung cancer screening | 347 | 347 |
| Ct scan of abdomen and pelvis with contrast | 290 | 285 |
| Nuclear medicine study from skull base to mid-thigh with ct scan | 251 | 241 |
| Piflufolastat f-18, diagnostic, 1 millicurie | 246 | 25 |
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.