NPPES file of Aug 9, 2026

Keith B. Block, LCSW

Clinical Social Worker · Sioux Falls, SD

Keith B. Block, LCSW is a clinical social worker with a practice address in Sioux Falls, South Dakota, and NPI 1558751933, issued on Jan 23, 2015. Check the license (South Dakota 5251, 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
1558751933
Name
Keith B. Block
Credential
LCSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
5251 SD
Self-reported in NPPES; status is on the state search
Practice location
6215 S Cliff Ave, Sioux Falls, SD 57108
Phone
(605) 322-3300
Enumerated
Jan 23, 2015
Record last updated
Apr 15, 2022
Fax
(605) 322-3301
Medicare enrollment
Enrolled (PECOS I20150310002318); 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.
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8 nearest clinical social worker records → All 565 in South Dakota → Look up another NPI →

Also registered at 6215 S Cliff Ave

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

  1. Emily Arnts, MDFamily Medicine Physician1407434384
  2. Kate Boos, MDFamily Medicine Physician1508087164
  3. Rochelle Boote, M.D.Pediatrics Physician1689936189
  4. Annai Desious, MDFamily Medicine Physician1508362773
  5. Mackenzie Holm-Moffitt, PA-CPhysician Assistant1285198572
  6. Virginia Lemme, PACPhysician Assistant1346293610

Verify Keith B. Block 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 5251    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.

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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).

Keith B. Block among 565 clinical social worker records in South Dakota

Keith B. Block, 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. Its NPI, issued in 2015, is newer than 40% of them.

  • NPI issued2015 · 40% of these records are older, 58% newer
  • In a Medicare fileYes · 22% of these records are
  • In the CMS Doctors and Clinicians fileYes · 33% of these records are
  • Graduated2011 · median 2015 among the 187 with a school on file
  • Record last updated2022 · 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).

240 clinical social worker records list a practice address in Sioux Falls

They are 240 of the 6,563 NPPES records with a practice address in Sioux Falls, and 565 clinical social worker records in South Dakota.

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

The 8 clinical social worker records with the nearest ZIP codes

  1. Joan Benz, PHD, MSW, CSW-PIPSioux Falls, SD 571081699836882
  2. Jeanne Bunkers, MSW LCSW PIPSioux Falls, SD 571081366435109
  3. Ann Flynn-Crowe, MSWSioux Falls, SD 571081205058633
  4. Shane Hamilton, CSW-PIPSioux Falls, SD 571081144554296
  5. Shirley Jones, MSW LCSWPIPSioux Falls, SD 571081780654582
  6. Jennifer Kaiser, LCSWSioux Falls, SD 571081114070372
  7. Christine Knapp, MSW,CSW-PIPSioux Falls, SD 571081124046693
  8. Patrick McNeil, LCSW, MSW, QMHP, PIPSioux Falls, SD 571081871565325

Common questions

What is Keith B. Block, LCSW's NPI number?

Keith B. Block, LCSW's National Provider Identifier (NPI) is 1558751933, issued on Jan 23, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Keith B. Block, LCSW located?

The NPPES record lists a practice address at 6215 S Cliff Ave, Sioux Falls, SD, 57108. Phone: (605) 322-3300. Providers update this record themselves, so call before visiting.

How can I verify Keith B. Block, LCSW's license?

NPPES lists South Dakota license number 5251, 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.