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

Ronald Demark, OD

Individual provider Optometrist · NPI 1346294741

Ronald Demark, OD is an Optometrist in Manitowoc, 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.

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Practice location Address checks out

3415 Calumet Ave
Manitowoc, WI 54220-5427
Phone: (920) 683-2244
Fax: (920) 684-7706
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 1403 (WI)

Record details

NPI number1346294741
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedMay 20, 2006
Last updated in NPPESJuly 13, 2026
Mailing address3415 Calumet Ave, Manitowoc, WI 54220-5427

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