Dr. Mark Eisenberg
Neurosurgery (Neurological Surgery Physician)
Nslij -department Of Neurosurgery, 900 Northern Boulevard
Great Neck, NY 11021
- Medicare participating
At a glance
- Medical school
- University of Miami, Lm Miller School of Medicine (1988)
- Years since graduation
- 38
- In the NPI registry since
- 2007
- Medicare patients seen, 2024
- 414
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
- 1988Medical school: University of Miami, Lm Miller School of Medicine
- 2007Registered 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
-
Neurological Surgery Physician primary
NY license 180342
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- North Shore University Hospital Manhasset, NY
- Long Island Jewish Medical Center New Hyde PArk, NY
- Northwell Hospital Glen Cove Glen Cove, NY
Medical groups
- North Shore-Lij Medical PC (6,440 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
- 414
- Services billed
- 750
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 20-29 minutes | 252 | 207 |
| New patient office or other outpatient visit, 45-59 minutes | 166 | 166 |
| Established patient office or other outpatient visit, 10-19 minutes | 32 | 31 |
| Insertion of spinal neurostimulator electrode array through skin | 23 | 12 |
| Established patient office or other outpatient visit, 30-39 minutes | 19 | 19 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 18 | 18 |
| Computer-assisted procedure inside brain | 18 | 18 |
| Creation of brain fluid drainage shunt, ventriculo-peritoneal, -pleural, other terminus | 13 | 13 |
| Electronic analysis of implanted neurostimulator generator with complex spinal cord or peripheral nerve stimulator programming | 12 | 12 |
| New patient office or other outpatient visit, 30-44 minutes | 12 | 12 |
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, 2 companies reported 3 payments worth $307 in total to this clinician.
| Stryker Corporation | $213 |
|---|---|
| Boston Scientific Corporation | $94.44 |
| Food and Beverage | $307 |
|---|
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.