Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Ann E Van Atta, MSW

Individual provider Clinical Social Worker · NPI 1629073028

Ann E Van Atta, MSW is a Clinical Social Worker in Onalaska, Wisconsin. Qualified in 1978, 48 years ago. Practices with Gundersen Lutheran Medical Center Inc, a 896-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
48
Licensed in
WI
In the registry since
2005
What do these letters mean?
MSW — Master of Social Work
The graduate degree in social work.

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Practice location Address checks out

123 16th Ave S
Onalaska, WI 54650-3109
Phone: (608) 796-8646
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 2975 (WI)

Record details

NPI number1629073028
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSW
Sole proprietorNo
NPI enumeratedJune 14, 2005
Last updated in NPPESApril 23, 2020
Certification dateApril 23, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 1978 (48 years in practice)
Group practice Gundersen Lutheran Medical Center Inc — 896 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients17
Services billed 160 a service is one billed item, such as a visit, a test or a procedure
Average patient age57

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Gundersen Lutheran Medical Center Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 896 clinicians in the practice; 12 are shown here.

Other providers in Onalaska