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

Gregory T Williams, MD

Individual provider Internal Medicine Physician · NPI 1043288848

Gregory T Williams, MD is an Internal Medicine Physician in Worcester, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2006.

Licensed in
MA
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.

See every abbreviation used in this directory →

Practice location Address checks out

123 Summer St Ste 220 S
Worcester, MA 01608
Phone: (508) 368-3122
Fax: (508) 368-3121
Show map & directions

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

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 79617 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 79617 (MA)

Record details

NPI number1043288848
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 9, 2006
Last updated in NPPESMarch 4, 2009
Mailing address630 Plantation St, Worcester, MA 01605

Other providers in Worcester