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

Katharine Zimmer Markham, RDN

Individual provider Registered Dietitian · NPI 1255958112

Katharine Zimmer Markham, RDN is a Registered Dietitian in Missoula, Montana. Licensed in Montana. Registered with an NPI since 2020.

Licensed in
MT
In the registry since
2020
What do these letters mean?
RDN — Registered Dietitian Nutritionist
The current title for a registered dietitian.

See every abbreviation used in this directory →

Practice location Address checks out

725 W Alder St Ste 28
Missoula, MT 59802-4026
Phone: (406) 239-0078
Fax: (833) 803-1538
Show map & directions

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

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence 88245 (MT)

Record details

NPI number1255958112
Entity typeIndividual (Type 1)
GenderFemale
Credentials RDN
Sole proprietorNo
NPI enumeratedJune 26, 2020
Last updated in NPPESMay 19, 2025
Certification dateMay 19, 2025

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