MRS. KATHLEEN O'SULLIVAN NILES CRNA
NPI 1528259389
Nurse Anesthetist, Certified Registered in Olympia Fields, IL
About Mrs. Kathleen O'sullivan Niles Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. KATHLEEN O'SULLIVAN NILES CRNA (NPI 1528259389) is an individual nurse anesthetist, certified registered in Olympia Fields, Illinois and active in the NPI registry since August 2007. She is enrolled in Medicare PECOS, is affiliated with Presence Saint Joseph Medical Center, and is a graduate of Other (2007).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Mrs. Kathleen O'sullivan Niles Crna 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
2Medicare enrollment records show Kathleen Niles reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mokena, IL 60448
- Reassigned Medicare billing, Illinois enrollment
- 208 clinicians in this Medicare group
Springfield, IL 62769
- Reassigned Medicare billing, Illinois enrollment
- 826 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 2
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Presence Saint Joseph Medical Center
Acute Care Hospitals · Joliet, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60461 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.
OLYMPIA FIELDS, IL 60461
OLYMPIA FIELDS, IL 60461
OLYMPIA FIELDS, IL 60461
OLYMPIA FIELDS, IL 60461
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 Kathleen Niles's NPI number?
The NPI number for Kathleen Niles is 1528259389. It was assigned to this individual provider in the NPPES registry on August 7, 2007. The provider is also known as Miss Kathleen Ann O'sullivan Registered Nurse.
Where is Kathleen Niles located?
Kathleen Niles practices at 20201 Crawford Ave, Olympia Fields, IL 60461. The listed phone number is (708) 747-4000.
What is Kathleen Niles's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Kathleen Niles enrolled in Medicare?
Yes. Kathleen Niles 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 Kathleen Niles's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kathleen Niles reassigns Medicare benefits to 2 organizations: American Anesthesiology Associates Of Illinois, S.C. (Mokena, IL) and North American Partners In Anesthesia (illinois), LLC (Springfield, 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 Kathleen Niles's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Kathleen Niles affiliated with any hospitals?
According to CMS data, Kathleen Niles is affiliated with Presence Saint Joseph Medical Center.
When was this NPI record last updated?
The NPPES record for Kathleen Niles was last updated on August 7, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Mrs. Kathleen O'sullivan Niles, CRNA · NPI 1528259389
Nurse Anesthetist, Certified Registered physician in Olympia Fields, Illinois. Individual provider, active in the CMS NPPES registry since August 7, 2007.
## Identity
- **NPI:** 1528259389 (Entity type: Individual)
- **Enumerated:** August 7, 2007
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **Sole proprietor:** No
## Practice location
- **Address:** 20201 CRAWFORD AVE, Olympia Fields, IL 60461-1010
- **Phone:** (708) 747-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): American Anesthesiology Associates Of Illinois, S.C. (NPI 1962512335, Mokena, IL); North American Partners In Anesthesia (illinois), LLC (NPI 1699032524, Springfield, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2007
## Record status
- **NPPES last updated:** August 7, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1528259389) · Data from the CMS NPPES public registry.