Dr. Daniel Ohngemach
Interventional Radiology (Vascular & Interventional Radiology Physician)
- Medicare participating
At a glance
- Years since graduation
- 11
- In the NPI registry since
- 2015
- Medicare patients seen, 2024
- 234
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
- 2015Registered 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
NY license 296086
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Suny/stony Brook University Hospital Stony Brook, NY
Medical groups
- Stony Brook Radiology, University Faculty Practice Corporation (59 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
- 234
- Services billed
- 613
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | 1,155 | 11 |
| Insertion of tube into abdominal, pelvic, or leg artery, additional second, third, and beyond | 46 | 12 |
| Review by radiologist of additional artery image | 40 | 11 |
| Fluoroscopic guidance for insertion or removal of central vein access device | 40 | 39 |
| Ultrasonic guidance for needle placement | 35 | 35 |
| Drainage of fluid from abdominal cavity using imaging guidance | 34 | 24 |
| Ultrasonic guidance for blood vessel access | 29 | 28 |
| Review by radiologist of ct guidance for needle placement | 19 | 19 |
| Replacement of kidney drainage tube using imaging guidance with review by radiologist | 18 | 14 |
| Telephone medical discussion with physician, 21-30 minutes | 18 | 17 |
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, 8 companies reported 31 payments worth $4,300 in total to this clinician.
| Boston Scientific Corporation | $2,563 |
|---|---|
| Histosonics, Inc. | $961 |
| Stryker Corporation | $439 |
| Penumbra, Inc. | $225 |
| Novartis Pharmaceuticals Corporation | $33.81 |
| Okami Medical, Inc. | $31.09 |
| Merit Medical Systems Inc | $26.51 |
| Inari Medical, Inc. | $20.19 |
| Food and Beverage | $2,736 |
|---|---|
| Travel and Lodging | $1,564 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Histosonics, Inc. Jul 16, 2025 | Travel and Lodging travel to Plymouth, MN | $736 |
| Boston Scientific Corporation Nov 13, 2025 | Travel and Lodging TheraSphere Y90 Glass Microspheres 10 GBq · TheraSphere_PI · travel to Chicago, IL · in-kind | $292 |
| Boston Scientific Corporation Nov 14, 2025 | Travel and Lodging TheraSphere Y90 Glass Microspheres 10 GBq · TheraSphere_PI · travel to Chicago, IL · in-kind | $292 |
| Boston Scientific Corporation Nov 13, 2025 | Travel and Lodging TheraSphere Y90 Glass Microspheres 10 GBq · TheraSphere_PI · travel to Chicago, IL · in-kind | $243 |
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.