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

Dana E. O'Brien, Ph D , LLC

Organization Psychologist · NPI 1356668164

Dana E. O'Brien, Ph D , LLC is a Psychologist in Rockville, Maryland. Licensed in Maryland. Registered with an NPI since 2010.

Licensed in
MD
In the registry since
2010
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

11119 Rockville Pike Ste 200
Rockville, MD 20852-3143
Phone: (301) 231-9665
Fax: (301) 231-0129
Show map & directions

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

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 01577 (MD)

Record details

NPI number1356668164
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Dana O'Brien — Owner · (301) 231-9665
NPI enumeratedMay 3, 2010
Last updated in NPPESJanuary 9, 2017
Mailing address11119 Rockville Pike, Suite 200, Rockville, MD 20852-3143

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