Individual provider · Type 1 NPI

John Matthew O'Brien, PhD

Clinical Psychologist · Portland, ME

NPI number 1720083504 Active

Practice location

465 Congress St, Ste 700
Portland, ME 04101-3539

Fax (207) 761-8150

Specialties and licenses

TaxonomyCodeLicense
Clinical Psychologist Primary 103TC0700XPS932 (ME)

Clinical Psychologist: A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of discip…

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About NPI 1720083504

John Matthew O'Brien, PhD's National Provider Identifier is 1720083504, issued on Jun 17, 2005. The primary taxonomy on file is Clinical Psychologist (103TC0700X), and the practice location is in Portland, ME. The record was last updated on Jul 13, 2026.