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

Donald Markham

Individual provider Addiction (Substance Use Disorder) Registered Nurse · NPI 1659815561

Donald Markham is an Addiction (Substance Use Disorder) Registered Nurse in Oshkosh, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2016.

Licensed in
WI
In the registry since
2016

Practice location Address checks out

505 S Washburn St
Oshkosh, WI 54904-7949
Phone: (920) 232-2332
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Registered Nurse (primary) Taxonomy 163WA0400X · Licence 226325-30 (WI)

Record details

NPI number1659815561
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedDecember 12, 2016
Last updated in NPPESDecember 12, 2016
Mailing address505 S Washburn St, Oshkosh, WI 54904-7949

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