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

Dennis S. O'Leary, DDS, PC

Organization General Practice Dentistry · NPI 1114044880

Dennis S. O'Leary, DDS, PC is a General Practice Dentistry in Washington, District of Columbia. Licensed in District of Columbia. Registered with an NPI since 2007.

Licensed in
DC
In the registry since
2007
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

5840 Macarthur Blvd NW
Washington, DC 20016-2542
Phone: (202) 966-8108
Fax: (202) 966-8106
Show map & directions

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

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X · Licence 5817 (DC)

Record details

NPI number1114044880
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Jennifer O'Leary — Manager · (202) 966-8108
NPI enumeratedMarch 26, 2007
Last updated in NPPESAugust 22, 2020
Mailing address5840 Macarthur Blvd Nw, Washington, DC 20016-2542

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