Quick answers
- Where does Gregory M. Lieberman see patients?
- Medicare's clinician data lists 1 practice location in Garden City, NY. Call before your visit to confirm the address.
- What is Gregory M. Lieberman's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty, and also Sports Medicine.
- Does Gregory M. Lieberman accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory M. Lieberman 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 Gregory M. Lieberman?
- (516) 536-2800, as listed in official Medicare / NPI Registry data.
- What is Gregory M. Lieberman's NPI number?
- 1285633719. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Gregory M. Lieberman is enrolled with Medicare (CMS data updated 2026-10-02).
- 1101 Stewart Ave, Suite 100Garden City, NY 11530 (516) 536‑2800
Group practices
Medicare enrollment lists Gregory M. Lieberman as a member of this group (CMS data updated 2026-10-02).
- True North Medical Group PC188 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
- Sports Medicinealso
Other orthopedic surgeons in Garden City
Clinicians with the same Medicare primary specialty in Garden City, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Albert Einstein College Of Medicine Of Yeshiva University |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285633719 |
| 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
- 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