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

Katherine Beerntsen, OD

Individual provider Optometrist · NPI 1114082443

Katherine Beerntsen, OD is an Optometrist in Janesville, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2006.

Licensed in
WI
In the registry since
2006
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

2500 Milton Ave
Janesville, WI 53545-0452
Phone: (608) 757-2633
Fax: (608) 757-2625
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 2338 (WI)

Record details

NPI number1114082443
Entity typeIndividual (Type 1)
GenderFemale
Credentials OD
Sole proprietorNo
NPI enumeratedDecember 27, 2006
Last updated in NPPESApril 3, 2009
Mailing address1680 Hawkinson Rd, Oregon, WI 53575-2306

Other providers in Janesville