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

Dan Patrick O'Brien, DDS

Individual provider Public Health Dentistry · NPI 1598826109

Dan Patrick O'Brien, DDS is a Public Health Dentistry in Arnold, Missouri. Licensed in Missouri. Registered with an NPI since 2006.

Licensed in
MO
In the registry since
2006
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

See every abbreviation used in this directory →

Practice location Partly verified

Some contact details are missing from the federal record.

Jefferson County Health Dept 1818 Lonedell Road
Arnold, MO 63010
Phone: (636) 282-1010
Fax: (636) 282-2525
Show map & directions

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

Specialties & licences

Public Health Dentistry (primary) Taxonomy 1223D0001X · Licence 010402 (MO)

Record details

NPI number1598826109
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedDecember 13, 2006
Last updated in NPPESJuly 8, 2007
Mailing addressJefferson County Health Department, 1818 Lonedell Road, Arnold, MO 63010

Other providers in Arnold