NPPES file of Aug 9, 2026

Alex Warkenthien

Acute Care Nurse Practitioner · Sioux Falls, SD

Alex Warkenthien is an acute care nurse practitioner with a practice address in Sioux Falls, South Dakota, and NPI 1386116762, issued on Dec 21, 2018. Check the license (South Dakota CP001515, as entered in NPPES) with the South Dakota board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1386116762
Name
Alex Warkenthien
Primary taxonomy
Acute Care Nurse Practitioner 363LA2100X
License number
CP001515 SD
Self-reported in NPPES; status is on the state search
Practice location
1325 S Cliff Ave, Sioux Falls, SD 57105
Phone
(605) 322-8000
Enumerated
Dec 21, 2018
Record last updated
Dec 21, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20190326000431); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest acute care nurse practitioner records → All 21 in South Dakota → Look up another NPI →

Also registered at 1325 S Cliff Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Colleen Achong, MDHospitalist Physician1841866340
  2. Comfort Agaba, MDInternal Medicine Physician1891221123
  3. Abdalah Ahmed, MDInternal Medicine Physician1457091993
  4. Mishka Ahmed, MDHospitalist Physician1285367979
  5. Mohammad Ahmed, M.DInternal Medicine Physician1528417821
  6. Jordan Ahrens, OTR/LOccupational Therapist1295442028

Verify Alex Warkenthien in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich South Dakota board licenses this profession
    Search for license CP001515    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the South Dakota license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through one group practice

  1. Avera MckennanSioux Falls, SD

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Alex Warkenthien among 21 acute care nurse practitioner records in South Dakota

Alex Warkenthien is one of 21 acute care nurse practitioner records with a practice address in South Dakota. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 48% of them.

  • NPI issued2018 · 48% of these records are older, 38% newer
  • In a Medicare fileYes · 90% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2018 · median 2019 among the 15 with a school on file
  • Record last updated2018 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2100X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Acute Care Nurse Practitioner providers in South Dakota

There are 21 acute care nurse practitioner records in South Dakota.

All 21 in South Dakota → Every provider in Sioux Falls → Acute Care Nurse Practitioner nationwide →

The 8 acute care nurse practitioner records with the nearest ZIP codes

  1. Katelyn Bauer, NPSioux Falls, SD 571051417627365
  2. Dana Olinger, ACNP-BCSioux Falls, SD 571051447507660
  3. Tammie Pulling, FNP-CSioux Falls, SD 571051053512442
  4. Sherry Ross, FNP-BC, MSNSioux Falls, SD 571051316279532
  5. Wade Sendelbach, MSN, APRN, CNPSioux Falls, SD 571051033548854
  6. Jamie Van LentSioux Falls, SD 571051295544690
  7. Katelyn Burch, AGACNP-BCSioux Falls, SD 571041669944625
  8. Ashley Heupel, CNPSioux Falls, SD 571041316829534

Common questions

What is Alex Warkenthien's NPI number?

Alex Warkenthien's National Provider Identifier (NPI) is 1386116762, issued on Dec 21, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Alex Warkenthien located?

The NPPES record lists a practice address at 1325 S Cliff Ave, Sioux Falls, SD, 57105. Phone: (605) 322-8000. Providers update this record themselves, so call before visiting.

How can I verify Alex Warkenthien's license?

NPPES lists South Dakota license number CP001515, as entered by the provider. Search the South Dakota board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.