Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Gregory Lieberman, MD

Individual provider Sports Medicine (Orthopaedic Surgery) Physician · NPI 1285633719

Gregory Lieberman, MD practises Orthopedic Surgery in Rockville Centre, New York. Graduated from Albert Einstein College of Medicine of Yeshiva University in 1989, 37 years ago. Practices with True North Medical Group PC, a 186-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
37
Trained at
Albert Einstein College of Medicine of Yeshiva University
Licensed in
NY
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

36 Lincoln Ave
Rockville Centre, NY 11570-5768 Not confirmed with CMS for 15 years — call before visiting
Phone: (516) 536-2800
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sports Medicine (Orthopaedic Surgery) Physician (primary) Taxonomy 207XX0005X · Licence 188009 (NY)

Record details

NPI number1285633719
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 18, 2005
Last updated in NPPESFebruary 23, 2011

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyORTHOPEDIC SURGERY
Also practisesSPORTS MEDICINE
Medical schoolALBERT EINSTEIN COLLEGE OF MEDICINE OF YESHIVA UNIVERSITY
Graduated 1989 (37 years in practice)
Group practice True North Medical Group Pc — 186 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Upper limb (arm) arthroscopy (minimally invasive joint repair) 19 times · 61st percentile
Lower limb (leg) arthroscopy (minimally invasive joint repair) 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients778
Services billed 15,893 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at True North Medical Group PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 186 clinicians in the practice; 12 are shown here.

Other providers in Rockville Centre