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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CASSIE MORTENSEN LPC, BCBA
NPI 1043851603
Counselor - Professional in Waunakee, WI

Active since October 04, 2019
101 E MAIN ST STE 4, WAUNAKEE, WI 53597(608) 285-2131(608) 850-9315 Get Directions Write a Review

NPPES record last updated: July 26, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 26, 2026, Jan 6, 2026, Oct 4, 2019 (3 updates tracked since 2019).

About Cassie Mortensen Lpc, Bcba NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CASSIE MORTENSEN LPC, BCBA (NPI 1043851603) is an individual professional provider in Waunakee, Wisconsin, licensed in Wisconsin (8716) and active in the NPI registry since October 2019.

NPPES Registry Identity

NPI1043851603
Entity TypeIndividualFemale
Primary Taxonomy101YP2500X
Provider Legal NameCASSIE MORTENSENCredential: LPC, BCBA
Location Address101 E MAIN ST STE 4Waunakee, WI 53597-1196
Mailing Address101 E Main St Ste 4Waunakee, WI 53597-1196 · (608) 285-2131 · Fax (608) 850-9315
Phone(608) 285-2131
Fax(608) 850-9315
Sole ProprietorNo
Enumeration DateOctober 4, 2019
Last NPPES UpdateJuly 26, 20263 updates tracked since enumeration
NPPES CertifiedJuly 26, 2026
✔ NPI 1043851603 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCounselor · ProfessionalBehavioral Health & Social Service Providers
Taxonomy Code101YP2500X
License✔ Licensed in WI · 8716
Also ListedBehavior AnalystTaxonomy 103K00000X · License 319-140 (WI)
101 E MAIN ST STE 4, Waunakee, WI 53597
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Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MARGARET CAROL LOMBARDI LPC
Counselor (Professional)
101 E MAIN ST STE 4
WAUNAKEE, WI 53597
Dane County (608) 285-2131
MORGAN KLEIN
Counselor (Mental Health)
101 E MAIN ST STE 4
WAUNAKEE, WI 53597
Dane County (608) 886-9023
TRAUMA LIFE CONSULTING
Clinic/Center (Mental Health (Including Community Mental Health Center))
101 E MAIN ST STE 4
WAUNAKEE, WI 53597
Dane County (608) 285-2131
JENNIFER JOY SLUGA LPC, SAC, NCC
Counselor (Professional)
101 E MAIN ST STE 4
WAUNAKEE, WI 53597
Dane County (608) 285-2131
AMBER RICHTER
Counselor (Mental Health)
101 E MAIN ST STE 4
WAUNAKEE, WI 53597
Dane County (608) 886-9023
TRAILWAYS LLC
Counselor (Mental Health)
101 E MAIN ST STE 4
WAUNAKEE, WI 53597
Dane County (608) 886-9023

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 Cassie Mortensen's NPI number?

The NPI number for Cassie Mortensen is 1043851603. It was assigned to this individual provider in the NPPES registry on October 4, 2019.

Where is Cassie Mortensen located?

Cassie Mortensen practices at 101 E Main St Ste 4, Waunakee, WI 53597. The listed phone number is (608) 285-2131.

What is Cassie Mortensen's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.

When was this NPI record last updated?

The NPPES record for Cassie Mortensen was last updated on July 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days 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.