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

Stephen L. Simpson, MD

Individual provider Specialist · NPI 1154322964

Stephen L. Simpson, MD is a Specialist in Ayer, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2005
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

198 Groton Rd Ste 1
Ayer, MA 01432-1177
Phone: (978) 862-0025
Fax: (978) 862-0049
Show map & directions

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

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence 205051 (MA)

Record details

NPI number1154322964
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 2, 2005
Last updated in NPPESMay 14, 2008
Mailing address198 Groton Rd, Suite 1, Ayer, MA 01432-1177

Other providers in Ayer