BarbaraBO'CallaghanNP

Barbara B O'Callaghan is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

• Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
• Connect with colleagues in the same hospital or clinic.
• Read the latest clinical news, personalized to your specialty.

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