Dr. Jonathan H. Klein
Radiation Oncology (Radiation Oncology Physician)
- Medicare participating
At a glance
- Years since graduation
- 16
- In the NPI registry since
- 2017
- Medicare patients seen, 2024
- 70
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
- 2017Registered 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
-
Radiation Oncology Physician primary
NY license 290243
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Maimonides Medical Center Brooklyn, NY
Medical groups
- Maimonides Division of Radiation Oncology, Fpp (6 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
- 70
- Services billed
- 550
- Patients’ average age
- 76
| Service | Times | Patients |
|---|---|---|
| Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy | 105 | 13 |
| Design and construction of complex radiation treatment device | 85 | 20 |
| Calculation of radiation therapy dose | 80 | 19 |
| Radiation treatment management, 5 treatment sessions | 60 | 20 |
| New patient office or other outpatient visit, 60-74 minutes | 33 | 33 |
| Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved | 23 | 21 |
| 3d radiation therapy planning | 18 | 17 |
| Complex radiation therapy planning | 17 | 16 |
| Design and construction of simple radiation treatment device | 12 | 12 |
| Established patient office or other outpatient visit, 30-39 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.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Silver Sulfadiazine Other prescribers in Bronx, NY | 11 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 4 companies reported 10 payments worth $243 in total to this clinician.
| Janssen Biotech, Inc. | $82.01 |
|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | $78.97 |
| Syndax Pharmaceuticals, Inc. | $49.37 |
| Agios Pharmaceuticals, Inc. | $32.88 |
| Food and Beverage | $243 |
|---|
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.