NPPES file of Aug 9, 2026

Sidney S. Thimm, LPCC

Mental Health Counselor · Duluth, MN

Sidney S. Thimm, LPCC is a mental health counselor with a practice address in Duluth, Minnesota, and NPI 1306709555, issued on Dec 4, 2025. Check the license (Minnesota 5252, as entered in NPPES) with the Minnesota 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
1306709555
Name
Sidney S. Thimm
Credential
LPCC
Primary taxonomy
Mental Health Counselor 101YM0800X
License number
5252 MN
Self-reported in NPPES; status is on the state search
Practice location
120 W 2ND St, Duluth, MN 55802
Phone
(218) 728-4491
Enumerated
Dec 4, 2025
Record last updated
Dec 4, 2025
Fax
(218) 728-4404
Medicare enrollment
Enrolled (PECOS I20251216002548); 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 mental health counselor records → All 4,133 in Minnesota → Look up another NPI →

Also registered at 120 W 2ND St

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

  1. Kyah Altiere, LICSWClinical Social Worker1407588130
  2. Stacy Anderson, MSW, LICSWClinical Social Worker1689441735
  3. Nolan EwertMental Health Counselor1689498776
  4. Sara Fijalkiewicz, MSW, LICSWClinical Social Worker1023880937
  5. Lindsay HansenClinical Social Worker1417724550
  6. Shannon Jackson, MSW, LICSW, LADCClinical Social Worker1194615336

Verify Sidney S. Thimm in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Minnesota board licenses this profession
    Search for license 5252    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 Minnesota 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. Human Development CenterDuluth, MN

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

Sidney S. Thimm among 4,133 mental health counselor records in Minnesota

Sidney S. Thimm, LPCC is one of 4,133 mental health counselor records with a practice address in Minnesota. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 85% of them.

  • NPI issued2025 · 85% of these records are older, 5% newer
  • In a Medicare fileYes · 16% of these records are
  • In the CMS Doctors and Clinicians fileYes · 21% of these records are
  • Graduated2023 · median 2017 among the 852 with a school on file
  • Record last updated2025 · 38% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YM0800X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

91 mental health counselor records list a practice address in Duluth

They are 91 of the 4,084 NPPES records with a practice address in Duluth, and 4,133 mental health counselor records in Minnesota.

All 4,133 in Minnesota → Every provider in Duluth → Mental Health Counselor nationwide →

The 8 mental health counselor records with the nearest ZIP codes

  1. Ralph Borchardt, M.A.Duluth, MN 558021043766835
  2. Zachary CampbellDuluth, MN 558021619119641
  3. Elizabeth Doherty, L.I.C.S.W.Duluth, MN 558021740316389
  4. Deanna EdwardsonDuluth, MN 558021649725243
  5. Rachel Kreger, MS, LPCCDuluth, MN 558021972925535
  6. Karina KrosbakkenDuluth, MN 558021730635392
  7. Amanda LufholmDuluth, MN 558021548532716
  8. Jessica Mueller Bouchard, M.A., LPCCDuluth, MN 558021134373954

Common questions

What is Sidney S. Thimm, LPCC's NPI number?

Sidney S. Thimm, LPCC's National Provider Identifier (NPI) is 1306709555, issued on Dec 4, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Sidney S. Thimm, LPCC located?

The NPPES record lists a practice address at 120 W 2ND St, Duluth, MN, 55802. Phone: (218) 728-4491. Providers update this record themselves, so call before visiting.

How can I verify Sidney S. Thimm, LPCC's license?

NPPES lists Minnesota license number 5252, as entered by the provider. Search the Minnesota 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.