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

Dr. John Andrew O'Brien, DDS

Individual provider General Practice Dentistry · NPI 1629120209

Dr. John Andrew O'Brien, DDS is a General Practice Dentistry in Rockford, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2007
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

5301 E State St Ste 306
Rockford, IL 61108-2901
Phone: (815) 399-2542
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X (IL)

Record details

NPI number1629120209
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorYes
NPI enumeratedJanuary 17, 2007
Last updated in NPPESJuly 8, 2007
Mailing address5301 E State St, Suite 306, Rockford, IL 61108-2901

Other providers in Rockford