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

Mary Margaret Keenan

Individual provider Gerontology Nurse Practitioner · NPI 1124988944

Mary Margaret Keenan is a Nurse Practitioner in Peoria, Illinois. Qualified in 2025, 1 year ago. Practices with Osf Multi-Specialty Group, a 2,128-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
1
Licensed in
IL
In the registry since
2025
Specialties on file
2
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Practice location Address checks out

200 E Pennsylvania Ave
Peoria, IL 61603-3089
Phone: (309) 624-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gerontology Nurse Practitioner (primary) Taxonomy 363LG0600X · Licence 209035156 (IL)
Neuroscience Registered Nurse Taxonomy 163WN0800X · Licence 41513787 (IL)

Record details

NPI number1124988944
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedNovember 14, 2025
Last updated in NPPESApril 10, 2026
Certification dateApril 10, 2026

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2025 (1 years in practice)
Group practice Osf Multi-Specialty Group — 2128 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Peoria