Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Janine Marie Ahrens, APNP
Nurse Practitioner in Waukesha, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659390896
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Registry record
Entity type Individual (Type 1)
Name Janine Marie Ahrens
Credential APNP
Sex Female
Practice address 1260 Sentry Dr Ste 140, Waukesha, WI, 53186
Phone (262) 524-1024
Fax (262) 524-8767
Enumeration date Jul 19, 2006
Last updated in NPPES Feb 5, 2026
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 1559 (WI) Primary
363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 1559-33 (WI) Secondary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 43911800 | Medicaid | WI | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Janine Ahrens?
Janine Ahrens is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Mark Carey Nephrology Physician · Waukesha, WI NPI 1003835422 Loganathan Elangovan Nephrology Physician · Waukesha, WI NPI 1477572881 Nephrology Associates Sc Specialist · Waukesha, WI NPI 1871679514 Rajan Regmi Internal Medicine Physician · Waukesha, WI NPI 1447413570 Laura Schmidt Nurse Practitioner · Waukesha, WI NPI 1275858144 Amber Wagner Medical Physician Assistant · Waukesha, WI NPI 1679914840 Younus Al-Midfai Nephrology Physician · Waukesha, WI NPI 1821626979 Michelle Meske Acute Care Nurse Practitioner · Waukesha, WI NPI 1194595447
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-05.