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

MS. Marilyn Gail Trenfield-Joyner, FNP

Individual provider Family Nurse Practitioner · NPI 1609921386

MS. Marilyn Gail Trenfield-Joyner, FNP is a Family Nurse Practitioner in Missoula, Montana. Licensed in Montana. Registered with an NPI since 2007.

Licensed in
MT
In the registry since
2007
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

Practice location Address checks out

500 W Broadway St Montana Spine And Pain Ctr
Missoula, MT 59802-4008
Phone: (406) 721-5600
Show map & directions

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

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 22750 (MT)

Record details

NPI number1609921386
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedJanuary 24, 2007
Last updated in NPPESJuly 25, 2007

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