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

Dr. Gregory Charles Mallo, MD

Individual provider Orthopaedic Surgery Physician · NPI 1245412295

Dr. Gregory Charles Mallo, MD is an Orthopedic Surgery in East Setauket, New York. Graduated from Jefferson Medical College of Thomas Jefferson University in 2005, 21 years ago. Practices with True North Medical Group PC, a 186-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
21
Trained at
Jefferson Medical College of Thomas Jefferson University
Licensed in
NY
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

6 Technology Dr 100
East Setauket, NY 11733-4079
Phone: (631) 689-6698
Fax: (631) 751-5548
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence 280603 (NY)

Record details

NPI number1245412295
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 1, 2007
Last updated in NPPESNovember 18, 2015

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolJEFFERSON MEDICAL COLLEGE OF THOMAS JEFFERSON UNIVERSITY
Graduated 2005 (21 years in practice)
Group practice True North Medical Group Pc — 186 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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