Ellen Louise Olek, FNP-BC
Family Nurse Practitioner · Neenah, WI
At a glance
130 2Nd Street, Neenah, WI 54956-2883
NPPES record updated Jul 11, 2023. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
130 2Nd Street Theda Clark Medical PlazaNeenah, WI 54956-2883
Additional reported practice locations
211 Bobby Jones Expy Ste CMartinez, GA 309075253
Phone: 7068603355
Fax: 7068608765 820 E Grant St
Appleton, WI 549113483
Phone: 9208315050
Fax: 9207386400 3880 Salem Lake Dr Ste F
Long Grove, IL 600475292
Phone: 8477192220
Fax: 8477192265
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2016
- CMS specialties
- Nurse Practitioner
Practice groups
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Service-mix comparison is unavailable for this NPI in the imported Medicare service file.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Family Nurse Practitioner
- Taxonomy code
- 363LF0000X
- Enumeration date
- Jul 17, 2017
- Record updated
- Jul 11, 2023
More registry details
- Provider type
- Individual · Type 1
- Other reported name
- ELLEN LOUISE HEMMER
- Reported credentials
- FNP-BC
Reported taxonomies and licenses
363LF0000X
License reported: RN270559 GA
363LF0000X
License reported: 9062 WI
363LF0000X · Primary
License reported: 209019307 IL
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
130 2Nd StreetTheda Clark Medical Plaza
Neenah, WI 54956-2883
- Phone
- (920) 831-5050
- Fax
- (920) 729-2104
Mailing address
604 32ND STROCK ISLAND, IL 612012029
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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