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

Mariah Johnson, DNP, PMHNP

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1548977309

Mariah Johnson, DNP, PMHNP is a Nurse Practitioner in Sigourney, Iowa. Graduated from University of Iowa, Rj & L Carver College of Medicine in 2022, 4 years ago. Practices with Keokuk County Health Center, a 23-clinician group and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
4
Trained at
University of Iowa, Rj & L Carver College of Medicine
Licensed in
IA
In the registry since
2022
What do these letters mean?
DNP — Doctor of Nursing Practice
The highest clinical degree in nursing.
PMHNP — Psychiatric-Mental Health Nurse Practitioner
A nurse practitioner specialising in mental health, able to prescribe psychiatric medication.

See every abbreviation used in this directory →

Practice location Address checks out

23019 Highway 149
Sigourney, IA 52591-8341
Phone: (641) 622-2720
Show map & directions

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

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence G171774 (IA)

Record details

NPI number1548977309
Entity typeIndividual (Type 1)
GenderFemale
Credentials DNP , PMHNP
Sole proprietorNo
NPI enumeratedNovember 1, 2022
Last updated in NPPESNovember 1, 2022
Certification dateNovember 1, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolUNIVERSITY OF IOWA, RJ & L CARVER COLLEGE OF MEDICINE
Graduated 2022 (4 years in practice)
Group practice Keokuk County Health Center — 23 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount