JANINE MARIE AHRENS APNP
NPI 1659390896
Nurse Practitioner in Waukesha, WI
About Janine Marie Ahrens Apnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JANINE MARIE AHRENS APNP (NPI 1659390896) is an individual nurse practitioner in Waukesha, Wisconsin, licensed in Wisconsin (1559) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Waukesha Memorial Hospital, and is a graduate of Other (1999).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Other Identifiers 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
Janine Marie Ahrens Apnp 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 Janine Ahrens reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Waukesha, WI 53186
- Reassigned Medicare billing, Wisconsin enrollment
- 8 clinicians in this Medicare group
West Allis, WI 53227
- Reassigned Medicare billing, Wisconsin enrollment
- 4,609 clinicians in this Medicare group
Milwaukee, WI 53209
- Reassigned Medicare billing, Wisconsin enrollment
- 1,615 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
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Waukesha Memorial Hospital
Acute Care Hospitals · Waukesha, WIAscension Columbia St Mary's Hospital Milwaukee
Acute Care Hospitals · Milwaukee, WIAurora Medical Center
Acute Care Hospitals · Grafton, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53186 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WAUKESHA, WI 53186
WAUKESHA, WI 53186
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 Janine Ahrens's NPI number?
The NPI number for Janine Ahrens is 1659390896. It was assigned to this individual provider in the NPPES registry on July 19, 2006. The provider is also known as Janine Marie Lapp Apnp.
Where is Janine Ahrens located?
Janine Ahrens practices at 1260 Sentry Dr Ste 140, Waukesha, WI 53186. The listed phone number is (262) 524-1024.
What is Janine Ahrens's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Janine Ahrens enrolled in Medicare?
Yes. Janine Ahrens 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 Janine Ahrens's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Janine Ahrens reassigns Medicare benefits to 3 organizations: Nephrology Associates Sc (Waukesha, WI), Aurora Medical Group, Inc. (West Allis, WI) and Aurora Advanced Healthcare, Inc. (Milwaukee, WI). 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 Janine Ahrens's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Janine Ahrens accept?
Health plans from CareSource (Common Ground Healthcare), Dean Health Plan, Network Health, Quartz and UnitedHealthcare list Janine Ahrens 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 Janine Ahrens affiliated with any hospitals?
According to CMS data, Janine Ahrens is affiliated with Waukesha Memorial Hospital, Ascension Columbia St Mary's Hospital Milwaukee and Aurora Medical Center.
When was this NPI record last updated?
The NPPES record for Janine Ahrens was last updated on February 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Janine Marie Ahrens, APNP · NPI 1659390896
Nurse Practitioner physician in Waukesha, Wisconsin. Individual provider, active in the CMS NPPES registry since July 19, 2006.
## Identity
- **NPI:** 1659390896 (Entity type: Individual)
- **Enumerated:** July 19, 2006
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 1559 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 1260 SENTRY DR STE 140, Waukesha, WI 53186-5990
- **Phone:** (262) 524-1024 · **Fax:** (262) 524-8767
## 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): Nephrology Associates Sc (NPI 1871679514, Waukesha, WI); Aurora Medical Group, Inc. (NPI 1457592735, West Allis, WI); Aurora Advanced Healthcare, Inc. (NPI 1265629133, Milwaukee, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1999
## Record status
- **NPPES last updated:** February 5, 2026
- **Other identifiers:** Medicaid 43911800 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1659390896) · Data from the CMS NPPES public registry.