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

Matthew W Callahan

Individual provider Clinic/Center · NPI 1245539097

Matthew W Callahan is a Clinic/Center in Billerica, Massachusetts. Practices as a sole proprietor. Registered with an NPI since 2011.

In the registry since
2011

Practice location Address checks out

15 Islington St
Billerica, MA 01821-5067
Phone: (978) 362-1742
Show map & directions

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

Specialties & licences

Clinic/Center (primary) Taxonomy 261Q00000X

Record details

NPI number1245539097
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedMarch 18, 2011
Last updated in NPPESMarch 18, 2011
Mailing address15 Islington St, Billerica, MA 01821-5067