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

Marilyn Heppner Janzen, PHD, ARNP

Individual provider Adult Psychiatric/Mental Health Clinical Nurse Specialist · NPI 1437169166

Marilyn Heppner Janzen, PHD, ARNP is an Adult Psychiatric/Mental Health Clinical Nurse Specialist in Joplin, Missouri. Licensed in Minnesota and Missouri. Registered with an NPI since 2006.

Licensed in
MN, MO
In the registry since
2006
Specialties on file
2
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.
ARNP — Advanced Registered Nurse Practitioner
The title some states use for an advanced practice nurse.

See every abbreviation used in this directory →

Practice location Address checks out

921 E 34th St
Joplin, MO 64804-3933
Phone: (417) 347-7065
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Psychiatric/Mental Health Clinical Nurse Specialist (primary) Taxonomy 364SP0809X · Licence 056840 (MO)
Adult Psychiatric/Mental Health Clinical Nurse Specialist Taxonomy 364SP0809X · Licence R686398 (MN)

Record details

NPI number1437169166
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD , ARNP
Sole proprietorNo
NPI enumeratedAugust 8, 2006
Last updated in NPPESFebruary 9, 2017
Mailing address2448 S Minnesota Ave, Joplin, MO 64804-2240

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