ELLEN LOUISE OLEK FNP-BC
NPI 1700309234
Nurse Practitioner - Family in Neenah, WI
About Ellen Louise Olek Fnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ELLEN LOUISE OLEK FNP-BC (NPI 1700309234) is an individual family provider in Neenah, Wisconsin, licensed in Illinois (209019307) and active in the NPI registry since July 2017. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 3
Other Identifiers 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
Ellen Louise Olek Fnp-bc 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 Ellen Olek reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Barrington, IL 60011
- Reassigned Medicare billing, Illinois enrollment
- 155 clinicians in this Medicare group
Elgin, IL 60123
- Reassigned Medicare billing, Illinois enrollment
- 15 clinicians in this Medicare group
Oakbrook Terrace, IL 60181
- Reassigned Medicare billing, Illinois enrollment
- 189 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54956 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEENAH, WI 54956
NEENAH, WI 54956
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 Ellen Olek's NPI number?
The NPI number for Ellen Olek is 1700309234. It was assigned to this individual provider in the NPPES registry on July 17, 2017. The provider is also known as Ellen Louise Hemmer.
Where is Ellen Olek located?
Ellen Olek practices at 130 2nd Street Theda Clark Medical Plaza, Neenah, WI 54956. The listed phone number is (920) 831-5050.
What is Ellen Olek's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Ellen Olek enrolled in Medicare?
Yes. Ellen Olek 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 Ellen Olek's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ellen Olek reassigns Medicare benefits to 3 organizations: Best Practices Inpatient Care, Ltd. (Barrington, IL), Karefirst Illinois PC (Elgin, IL) and Vpa PC (Oakbrook Terrace, 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 Ellen Olek'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 Ellen Olek was last updated on July 11, 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.
# Ellen Louise Olek, FNP-BC · NPI 1700309234
Family physician in Neenah, Wisconsin. Individual provider, active in the CMS NPPES registry since July 17, 2017.
## Identity
- **NPI:** 1700309234 (Entity type: Individual)
- **Enumerated:** July 17, 2017
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 209019307 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 130 2ND STREET, THEDA CLARK MEDICAL PLAZA, Neenah, WI 54956-2883
- **Phone:** (920) 831-5050 · **Fax:** (920) 729-2104
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Best Practices Inpatient Care, Ltd. (NPI 1073549713, Barrington, IL); Karefirst Illinois PC (NPI 1487996872, Elgin, IL); Vpa PC (NPI 1174925663, Oakbrook Terrace, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** July 11, 2023
- **Other identifiers:** Medicaid 209019307 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1700309234) · Data from the CMS NPPES public registry.