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

Alex Warkenthien

Individual provider Acute Care Nurse Practitioner · NPI 1386116762

Alex Warkenthien is a Nurse Practitioner in Sioux Falls, South Dakota. Qualified in 2018, 8 years ago. Practices with Avera McKennan, a 962-clinician group and accepts Medicare assignment. Licensed in South Dakota.

Years since qualifying
8
Licensed in
SD
In the registry since
2018
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Practice location Address checks out

1325 S Cliff Ave
Sioux Falls, SD 57105-1007
Phone: (605) 322-8000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Acute Care Nurse Practitioner (primary) Taxonomy 363LA2100X · Licence CP001515 (SD)

Record details

NPI number1386116762
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedDecember 21, 2018
Last updated in NPPESDecember 21, 2018

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Avera McKennan — 962 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 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 patients30
Services billed 39 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Avera Heart Hospital Of South Dakota Hospital · Sioux Falls, SD · listed as Heart Hospital of South Dakota LLC
  • Avera McKennan Hospital & University Health Center Hospital · Sioux Falls, SD

Colleagues at Avera McKennan

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 962 clinicians in the practice; 12 are shown here.

Other providers in Sioux Falls