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

Gregory M. Leslie, MD

Individual provider Internal Medicine Physician · NPI 1710305289

Gregory M. Leslie, MD is an Internal Medicine in Worcester, Massachusetts. Graduated from University of Massachusetts Medical School in 2014, 12 years ago. Practices with Umass Memorial Medical Group Inc, a 2,467-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
12
Trained at
University of Massachusetts Medical School
Licensed in
MA
In the registry since
2014
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

55 Lake Ave N
Worcester, MA 01655-0002
Phone: (508) 334-8515
Fax: (508) 334-6490
Show map & directions

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

Additional practice locations (2)

  • 157 Union St, Marlborough, MA 01752-1228 — (508) 486-5678
  • 119 Belmont St, Worcester, MA 01605-2903 — (508) 334-8515

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 269608 (MA)

Record details

NPI number1710305289
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 2, 2014
Last updated in NPPESMarch 26, 2021
Certification dateMarch 26, 2021
Mailing addressPo Box 415348, Boston, MA 02241-5348

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated 2014 (12 years in practice)
Group practice Umass Memorial Medical Group Inc — 2467 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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