> > > > Dr. Catherine O'Brien, MD
Dr. Catherine Lloyd O'Brien MD is a female Allergist & Immunologist, has 45 years of experience and practices in Pediatrics, Allergy & Immunology, Allergy, and Allergy & Immunology.
Dr. Catherine O'Brien has 4 office locations.
Costa John J MD Group
53 Marion Rd
Unit 7
Wareham, MA 02571

Phone Number
Locations and availability (4)
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Catherine O'Brien:

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  1. Qualifications
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Specialties & Research

  • She has special expertise in 3 areas:
  • Asthma
  • Food Allergy (Hypersensitivity)
  • Nasal Allergy (Rhinitis)

Education & Awards

Dr. O'Brien graduated from University College Dublin.


Dr. O'Brien has 2 hospital affiliations:

  • Tobey Hospital Site of Southcoast Hospitals Group 
  • Southcoast Hospitals Group,Inc 

Accepted Insurance Plans

Dr. O'Brien accepts these health insurances in at least one office:

  • MVP Health Care Preferred Care - 2 plans
  • Cigna - 6 plans
  • Humana - 1 plan
  • Great-West Healthcare - 2 plans


  • Italian
  • Russian
  • Spanish

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Additional Information
Where does Dr. Catherine L. O'Brien practice?
Dr. Catherine O'Brien practices Pediatrics, Allergy & Immunology, Allergy, and Allergy & Immunology near Wareham, MA.
Additional practice locations include: Norwell, MA and Kingston, MA.
See Wareham Pediatricians and Wareham Allergists.