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

Mary K. O'Farrell, Ph D , PA

Organization Psychologist · NPI 1164699088

Mary K. O'Farrell, Ph D , PA is a Psychologist in Washington, District of Columbia. Registered with an NPI since 2008.

In the registry since
2008
What do these letters mean?
PA — Professional association
A form of business registration, not a clinical qualification.

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Practice location Address checks out

3000 Connecticut Ave NW Ste 214
Washington, DC 20008-2554
Phone: (202) 232-4189
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X

Record details

NPI number1164699088
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mary O'Farrell — Ph.D. · (202) 232-4189
NPI enumeratedMay 9, 2008
Last updated in NPPESMay 9, 2008
Mailing address3000 Connecticut Ave Nw Ste 214, Washington, DC 20008-2554

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