NPPES file of Aug 9, 2026

Sonja Marie Halverson, LCSW

Clinical Social Worker · Spearfish, SD

Sonja Marie Halverson, LCSW is a clinical social worker with a practice address in Spearfish, South Dakota, and NPI 1740966555, issued on Jun 26, 2023. Check the license (South Dakota 6391, as entered in NPPES) with the South Dakota board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1740966555
Name
Sonja Marie Halverson
Credential
LCSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
6391 SD
Self-reported in NPPES; status is on the state search
Practice location
115 N 7TH St Ste 6, Spearfish, SD 57783
Phone
(605) 645-0100
Enumerated
Jun 26, 2023
Record last updated
Mar 14, 2024
Fax
(605) 717-1009
Medicaid ID
3007730 SD
Medicare enrollment
Enrolled (PECOS I20240604003951); may accept 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.
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8 nearest clinical social worker records → All 565 in South Dakota → Look up another NPI →

Also registered at 115 N 7TH St Ste 6

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

  1. Cecily Barnaud, LCSWClinical Social Worker1699255208
  2. Brian Brandt, CNP, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1629612148
  3. Michael Easley, LPCProfessional Counselor1548026925
  4. Mark Flint, LPCProfessional Counselor1790494169
  5. Shannon Maxwell, PSY.D, LPClinical Psychologist1790058089
  6. Verna Schad, CNPPsychiatric/Mental Health Nurse Practitioner1457325276

Verify Sonja Marie Halverson 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 6391    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

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Sonja Marie Halverson among 565 clinical social worker records in South Dakota

Sonja Marie Halverson, LCSW is one of 565 clinical social worker records with a practice address in South Dakota. 22% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2023, is newer than 83% of them.

  • NPI issued2023 · 83% of these records are older, 14% newer
  • In a Medicare fileNo · 22% of these records are
  • In the CMS Doctors and Clinicians fileYes · 33% of these records are
  • Graduated2022 · median 2015 among the 187 with a school on file
  • Record last updated2024 · 39% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

9 clinical social worker records list a practice address in Spearfish

They are 9 of the 382 NPPES records with a practice address in Spearfish, and 565 clinical social worker records in South Dakota. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 565 in South Dakota → Every provider in Spearfish → Clinical Social Worker nationwide →

The 8 clinical social worker records with the nearest ZIP codes

  1. Cecily Barnaud, LCSWSpearfish, SD 577831699255208
  2. Katy DavisSpearfish, SD 577831487266722
  3. Jenny Greslin, LCSW, QMHPSpearfish, SD 577831841438223
  4. Jerry Meyer, MSW, LCSW-PIPSpearfish, SD 577831013254481
  5. Sheri Short, CSW-PIPSpearfish, SD 577831023070844
  6. Loree Siegfried, CSW-PIP, LCSWSpearfish, SD 577831114153772
  7. Genaveve Thomson, LCSWSpearfish, SD 577831609721463
  8. Rita Van Norman, LCSWSpearfish, SD 577831952433302

Common questions

What is Sonja Marie Halverson, LCSW's NPI number?

Sonja Marie Halverson, LCSW's National Provider Identifier (NPI) is 1740966555, issued on Jun 26, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Sonja Marie Halverson, LCSW located?

The NPPES record lists a practice address at 115 N 7TH St Ste 6, Spearfish, SD, 57783. Phone: (605) 645-0100. Providers update this record themselves, so call before visiting.

How can I verify Sonja Marie Halverson, LCSW's license?

NPPES lists South Dakota license number 6391, 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. 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.