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

Tammy Von Olnhausen, RN

Individual provider Case Management Registered Nurse · NPI 1962241679

Tammy Von Olnhausen, RN is a Case Management Registered Nurse in Billings, Montana. Licensed in Montana. Registered with an NPI since 2024.

Licensed in
MT
In the registry since
2024
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

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Practice location Address checks out

123 S 27th St
Billings, MT 59101-4227
Phone: (406) 200-4375
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Case Management Registered Nurse (primary) Taxonomy 163WC0400X · Licence 48091 (MT)

Record details

NPI number1962241679
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN
Sole proprietorNo
NPI enumeratedMay 22, 2024
Last updated in NPPESMay 22, 2024
Certification dateMay 22, 2024

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