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

Dr. Catherine Lloyd O'Brien, MD

Individual provider Allergy & Immunology Physician · NPI 1205800810

Dr. Catherine Lloyd O'Brien, MD is an Allergy & Immunology Physician in Wareham, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2006.

Licensed in
MA
In the registry since
2006
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

53 Marion Rd Ste 7
Wareham, MA 02571-1406
Phone: (508) 295-5572
Fax: (508) 291-2777
Show map & directions

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

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence 34833 (MA)

Record details

NPI number1205800810
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 13, 2006
Last updated in NPPESSeptember 26, 2007