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

Dr. John George Masak, DDS

Individual provider General Practice Dentistry · NPI 1568516169

Dr. John George Masak, DDS is a General Practice Dentistry in Appleton, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2007.

Licensed in
WI
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

3305 N Ballard Rd Ste D
Appleton, WI 54911-9001
Phone: (920) 733-5607
Fax: (920) 733-2010
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 3741 (WI)

Record details

NPI number1568516169
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedJanuary 22, 2007
Last updated in NPPESJuly 8, 2007
Mailing address3305 N Ballard Rd Ste D, Appleton, WI 54911-9001

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