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

Margaret Arlene Riddell

Individual provider Family Medicine Physician · NPI 1033913611

Margaret Arlene Riddell is a Nurse Practitioner in Marion, Iowa. Qualified in 2024, 2 years ago. Practices with Mercy Physician Associates Inc, a 103-clinician group and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
2
Licensed in
IA
In the registry since
2025

Practice location Address checks out

3701 Katz Dr
Marion, IA 52302-3871
Phone: (319) 377-3174
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence A181578 (IA)

Record details

NPI number1033913611
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedApril 2, 2025
Last updated in NPPESApril 2, 2025
Certification dateApril 2, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2024 (2 years in practice)
Group practice Mercy Physician Associates Inc — 103 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Marion