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

William Davenport Powlis, MD

Individual provider Radiation Oncology Physician · NPI 1083656771

William Davenport Powlis, MD is a Radiation Oncology Physician in South Weymouth, Massachusetts. Licensed in Massachusetts and Pennsylvania. Registered with an NPI since 2006.

Licensed in
MA, PA
In the registry since
2006
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 Address checks out

101 Columbian St Radiation Oncology
South Weymouth, MA 02190-1601
Phone: (781) 624-4700
Fax: (781) 624-4710
Show map & directions

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

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 38122 (MA)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence MD027906E (PA)

Record details

NPI number1083656771
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 10, 2006
Last updated in NPPESAugust 24, 2015