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

Mr. Austin John O'Brien, MD

Individual provider Family Medicine Physician · NPI 1104808138

Mr. Austin John O'Brien, MD is a Family Medicine Physician in Lowell, 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

595 Pawtucket Blvd 2nd Fl 2ND Fl
Lowell, MA 01852
Phone: (978) 459-8447
Fax: (978) 459-6125
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 76888 (MA)

Record details

NPI number1104808138
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 16, 2005
Last updated in NPPESDecember 17, 2019
Certification dateDecember 17, 2019

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