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

Individual provider Internal Medicine Physician · NPI 1245721018

Dr. Diane Sun, MD is an Internal Medicine in Boston, Massachusetts. Graduated from Drexel University College of Medicine in 2018, 8 years ago. Practices with Pratt Medical Group Inc, a 277-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
8
Trained at
Drexel University College of Medicine
Licensed in
MA
In the registry since
2018
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

800 Washington St
Boston, MA 02111-1552
Phone: (617) 636-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 276319 (MA)

Record details

NPI number1245721018
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 28, 2018
Last updated in NPPESMay 28, 2018

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolDREXEL UNIVERSITY COLLEGE OF MEDICINE
Graduated 2018 (8 years in practice)
Group practice Pratt Medical Group Inc — 277 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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