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

Individual provider Diagnostic Radiology Physician · NPI 1467740050

Dr. Sebastian R McWilliams, MD is a Diagnostic Radiology Physician in Boston, Massachusetts. Licensed in Massachusetts and Missouri. Registered with an NPI since 2011.

Licensed in
MA, MO
In the registry since
2011
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Partly verified

Some contact details are missing from the federal record.

Massachusetts General Hospital 55 Fruit St Blake Sub Bsmt Rm 0029-A
Boston, MA 02114
Phone: (617) 724-5246
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Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 272098 (MA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 2016006387 (MO)

Record details

NPI number1467740050
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 15, 2011
Last updated in NPPESAugust 2, 2017

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