JENNIFER NOELLE O'NEIL NP
NPI 1689411548
Nurse Practitioner in Crystal Lake, IL
About Jennifer Noelle O'neil Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JENNIFER NOELLE O'NEIL NP (NPI 1689411548) is an individual nurse practitioner in Crystal Lake, Illinois, licensed in Illinois (209.030274) and active in the NPI registry since July 2024. She is enrolled in Medicare PECOS, is affiliated with Mercyhealth Hospital & Physician Clinic-crystal La, and maintains a secondary practice location in Cary.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
Accepted Insurance
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
Jennifer Noelle O'neil Np 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 Reassignment
Medicare enrollment records show Jennifer O'neil reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Janesville, WI 53548
- Reassigned Medicare billing, Illinois enrollment
- 671 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercyhealth Hospital & Physician Clinic-Crystal La
Acute Care Hospitals · Crystal Lake, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60014 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 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CRYSTAL LAKE, IL 60014
CRYSTAL LAKE, IL 60014
CRYSTAL LAKE, IL 60014
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 Jennifer O'neil's NPI number?
The NPI number for Jennifer O'neil is 1689411548. It was assigned to this individual provider in the NPPES registry on July 9, 2024. The provider is also known as Jennifer Noelle Butler Np.
Where is Jennifer O'neil located?
Jennifer O'neil practices at 875 S Route 31, Crystal Lake, IL 60014. The listed phone number is (779) 220-5500.
What is Jennifer O'neil's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Jennifer O'neil enrolled in Medicare?
Yes. Jennifer O'neil 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 organization bills Medicare for Jennifer O'neil's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jennifer O'neil reassigns Medicare benefits to Mercy Health System Corporation (Janesville, WI). The 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 Jennifer O'neil's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jennifer O'neil accept?
Health plans from Anthem Blue Cross and Blue Shield, MercyCare and MercyCare Health Plans list Jennifer O'neil as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Jennifer O'neil affiliated with any hospitals?
According to CMS data, Jennifer O'neil is affiliated with Mercyhealth Hospital & Physician Clinic-Crystal La.
When was this NPI record last updated?
The NPPES record for Jennifer O'neil was last updated on December 31, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.
# Jennifer Noelle O'neil, NP · NPI 1689411548
Nurse Practitioner physician in Crystal Lake, Illinois. Individual provider, active in the CMS NPPES registry since July 9, 2024.
## Identity
- **NPI:** 1689411548 (Entity type: Individual)
- **Enumerated:** July 9, 2024
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 209.030274 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 875 S ROUTE 31, Crystal Lake, IL 60014-8190
- **Phone:** (779) 220-5500 · **Fax:** (779) 220-5184
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Mercy Health System Corporation (NPI 1598718603, Janesville, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** December 31, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1689411548) · Data from the CMS NPPES public registry.