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

John J. O'Brien, DDS

Individual provider General Practice Dentistry · NPI 1811208333

John J. O'Brien, DDS is a General Practice Dentistry in Marshfield, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2010.

Licensed in
WI
In the registry since
2010
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 Address checks out

1307 N Saint Joseph Ave
Marshfield, WI 54449-1340
Phone: (715) 221-5600
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 6543 (WI)

Record details

NPI number1811208333
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedJune 30, 2010
Last updated in NPPESJune 10, 2013
Mailing address1000 N Oak Ave, Marshfield, WI 54449-5703

Other providers in Marshfield