Quick answers
- Which hospitals does Simon Greenbaum work at?
- Medicare's official clinician data lists Simon Greenbaum at 5 hospitals: North Shore University Hospital, Northwell Hospital Glen Cove, Ns/Lij HS Huntington Hospital, St Charles Hospital and St Francis Hospital - The Heart Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Simon Greenbaum see patients?
- Medicare's clinician data lists 2 practice locations, including Great Neck, NY and Exeter, NH. Call before your visit to confirm the address.
- What is Simon Greenbaum's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Simon Greenbaum accept Medicare assignment?
- Yes. Medicare's clinician data says Simon Greenbaum accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Simon Greenbaum?
- (516) 627-8717, as listed in official Medicare / NPI Registry data.
- What is Simon Greenbaum's NPI number?
- 1255750816. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Simon Greenbaum works
Medicare's Facility Affiliation Data lists Simon Greenbaum at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- North Shore University HospitalManhasset, NY · Acute Care Hospital · CCN 330106
- Northwell Hospital Glen CoveGlen Cove, NY · Acute Care Hospital · CCN 330181
- Ns/Lij HS Huntington HospitalHuntington, NY · Acute Care Hospital · CCN 330045
- St Charles HospitalPort Jefferson, NY · Acute Care Hospital · CCN 330246
- St Francis Hospital - The Heart CenterRoslyn, NY · Acute Care Hospital · CCN 330182
Practice locations
Addresses where Simon Greenbaum is enrolled with Medicare (CMS data updated 2026-10-02).
- 600 Northern BlvdGreat Neck, NY 11021 (516) 627‑8717
- 7 Alumni DrExeter, NH 03833 (603) 777‑1000
Group practices
Medicare enrollment lists Simon Greenbaum as a member of these groups (CMS data updated 2026-10-02).
- Core Physicians LLC289 clinicians in the group
- Orthopaedic and Neurosurgery Specialists, PLLC259 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Great Neck
Clinicians with the same Medicare primary specialty in Great Neck, NY — not a recommendation.
Clinician information
| Medical school | Albert Einstein College Of Medicine Of Yeshiva University |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255750816 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians