MARY MARGARET KEENAN
NPI 1124988944
Nurse Practitioner - Gerontology in Peoria, IL
About Mary Margaret Keenan NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY MARGARET KEENAN (NPI 1124988944) is an individual gerontology provider in Peoria, Illinois, licensed in Illinois (209035156) and active in the NPI registry since November 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2025).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mary Margaret Keenan is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 61603 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PEORIA, IL 61603
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mary Keenan's NPI number?
The NPI number for Mary Keenan is 1124988944. It was assigned to this individual provider in the NPPES registry on November 14, 2025.
Where is Mary Keenan located?
Mary Keenan practices at 200 E Pennsylvania Ave, Peoria, IL 61603. The listed phone number is (309) 624-4000.
What is Mary Keenan's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.
Is Mary Keenan enrolled in Medicare?
Yes. Mary Keenan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
When was this NPI record last updated?
The NPPES record for Mary Keenan was last updated on April 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mary Margaret Keenan · NPI 1124988944
Gerontology physician in Peoria, Illinois. Individual provider, active in the CMS NPPES registry since November 14, 2025.
## Identity
- **NPI:** 1124988944 (Entity type: Individual)
- **Enumerated:** November 14, 2025
- **Primary specialty:** Nurse Practitioner - Gerontology · taxonomy 363LG0600X
- **State license:** 209035156 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 E PENNSYLVANIA AVE, Peoria, IL 61603-3089
- **Phone:** (309) 624-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** April 10, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1124988944) · Data from the CMS NPPES public registry.