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

Individual provider Internal Medicine Physician · NPI 1497167936

William Gionfriddo, MD is an Internal Medicine in Boston, Massachusetts. Graduated from University of Connecticut School of Medicine in 2014, 12 years ago. Practices with Trinity Health of New England Provider Network Organization Inc, a 635-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
12
Trained at
University of Connecticut School of Medicine
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

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 260716 (MA)

Record details

NPI number1497167936
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 2, 2014
Last updated in NPPESJune 2, 2014

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CONNECTICUT SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Trinity Health Of New England Provider Network Organization Inc — 635 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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