NPPES file of Aug 9, 2026

Nancy Ann Thieman, LISW

Clinical Social Worker · Sioux City, IA

Nancy Ann Thieman, LISW is a clinical social worker with a practice address in Sioux City, Iowa, and NPI 1699095919, issued on Jun 9, 2010. Check the license (Iowa 007113, as entered in NPPES) with the Iowa 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
1699095919
Name
Nancy Ann Thieman
Credential
LISW
Primary taxonomy
Clinical Social Worker 1041C0700X
License numbers
007113 IA
6715 NE
Self-reported in NPPES; status is on the state search
Practice location
625 Court Street, Sioux City, IA 51101
Phone
(712) 252-3871
Enumerated
Jun 9, 2010
Record last updated
Jun 1, 2022
Fax
(712) 252-3157
Medicare enrollment
Enrolled (PECOS I20120216000473); 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 2,170 in Iowa → Look up another NPI →

Also registered at 625 Court Street

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

  1. Joada Best, ARNPPsychiatric/Mental Health Clinical Nurse Specialist1619153137
  2. Sara Bushby, LISWClinical Social Worker1750614137
  3. Cassidy Carr, PMHNP-BCPsychiatric/Mental Health Clinical Nurse Specialist1871052472
  4. Cynthia Guthmiller, ARNP/ PMHNPPsychiatric/Mental Health Nurse Practitioner1790755395
  5. Danika Hansen, PMHNPPsychiatric/Mental Health Clinical Nurse Specialist1720698335
  6. Victoria Mason, LMFTMarriage & Family Therapist1346643244

Verify Nancy Ann Thieman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Iowa board licenses this profession
    Search for license 007113    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 Iowa 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. Siouxland Mental Health Services IncSioux City, IA

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

Nancy Ann Thieman among 2,170 clinical social worker records in Iowa

Nancy Ann Thieman, LISW is one of 2,170 clinical social worker records with a practice address in Iowa. 17% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 31% of them.

  • NPI issued2010 · 31% of these records are older, 66% newer
  • In a Medicare fileYes · 17% of these records are
  • In the CMS Doctors and Clinicians fileYes · 24% of these records are
  • Graduated2008 · median 2011 among the 528 with a school on file
  • Record last updated2022 · 49% 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 Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

91 clinical social worker records list a practice address in Sioux City

They are 91 of the 1,486 NPPES records with a practice address in Sioux City, and 2,170 clinical social worker records in Iowa.

All 2,170 in Iowa → Every provider in Sioux City → Clinical Social Worker nationwide →

The 8 clinical social worker records with the nearest ZIP codes

  1. Verna Halligan, LISWSioux City, IA 511011659335883
  2. Beth Harms, LISWSioux City, IA 511011225045172
  3. Theresa Hey, MSWSioux City, IA 511011205890969
  4. Wade Kuehl, LISWSioux City, IA 511011417911512
  5. Sheila Martin, LISWSioux City, IA 511011417058306
  6. Leslie McDonald-Gonzalez, LISWSioux City, IA 511011528148103
  7. Bobbi Meister, MSWSioux City, IA 511011285698373
  8. Katherine Murphy, MSWSioux City, IA 511011811951023

Common questions

What is Nancy Ann Thieman, LISW's NPI number?

Nancy Ann Thieman, LISW's National Provider Identifier (NPI) is 1699095919, issued on Jun 9, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Nancy Ann Thieman, LISW located?

The NPPES record lists a practice address at 625 Court Street, Sioux City, IA, 51101. Phone: (712) 252-3871. Providers update this record themselves, so call before visiting.

How can I verify Nancy Ann Thieman, LISW's license?

NPPES lists Iowa license number 007113, as entered by the provider. Search the Iowa 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.