AARON SCOTT EYSTER OT
NPI 1033643515
Occupational Therapist in Naperville, IL
About Aaron Scott Eyster Ot NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AARON SCOTT EYSTER OT (NPI 1033643515) is an individual occupational therapist in Naperville, Illinois, licensed in Illinois (056011682) and active in the NPI registry since April 2017. He maintains a secondary practice location in Joliet and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Aaron Scott Eyster Ot 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.
Medicare Billing Reassignments
3Medicare enrollment records show Aaron Eyster reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Downers Grove, IL 60515
- Reassigned Medicare billing, Illinois enrollment
- 1,061 clinicians in this Medicare group
Oak Brook, IL 60523
- Reassigned Medicare billing, Illinois enrollment
- 1,298 clinicians in this Medicare group
Rockford, IL 61107
- Reassigned Medicare billing, Illinois enrollment
- 562 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Aaron Eyster's NPI number?
The NPI number for Aaron Eyster is 1033643515. It was assigned to this individual provider in the NPPES registry on April 12, 2017.
Where is Aaron Eyster located?
Aaron Eyster practices at 1259 Rickert Dr Ste 201, Naperville, IL 60540. The listed phone number is (630) 967-2000.
What is Aaron Eyster's specialty?
The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.
Is Aaron Eyster enrolled in Medicare?
Yes. Aaron Eyster 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.
Which organizations bill Medicare for Aaron Eyster's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Eyster reassigns Medicare benefits to 3 organizations: Dupage Medical Group Ltd (Downers Grove, IL), Athletico Ltd (Oak Brook, IL) and Orthomidwest, PLLC (Rockford, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Aaron Eyster's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Aaron Eyster was last updated on October 5, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.