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

Dr. Daniel Robert O'Brien, DMD

Individual provider General Practice Dentistry · NPI 1588856991

Dr. Daniel Robert O'Brien, DMD is a General Practice Dentistry in Marlborough, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2007
What do these letters mean?
DMD — Doctor of Dental Medicine
A dentist. Identical training and licensing to a DDS.

See every abbreviation used in this directory →

Practice location Address checks out

340 Maple St Ste 100
Marlborough, MA 01752-3200
Phone: (508) 481-0110
Fax: (508) 481-7110
Show map & directions

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

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X · Licence 17502 (MA)

Record details

NPI number1588856991
Entity typeIndividual (Type 1)
GenderMale
Credentials DMD
Sole proprietorYes
NPI enumeratedAugust 10, 2007
Last updated in NPPESAugust 10, 2007
Mailing address340 Maple St, Suite 100, Marlborough, MA 01752-3200

Other providers in Marlborough