NPPES file of Aug 9, 2026

Shelby Marx, MSW, LICSW

Clinical Social Worker · Winona, MN

Shelby Marx, MSW, LICSW is a clinical social worker with a practice address in Winona, Minnesota, and NPI 1699220418, issued on Aug 22, 2016. Check the license (Minnesota 26571, 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
1699220418
Name
Shelby Marx
Credential
MSW, LICSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
26571 MN
Self-reported in NPPES; status is on the state search
Practice location
420 E Sarnia St Ste 2100, Winona, MN 55987
Phone
(507) 453-6242
Enumerated
Aug 22, 2016
Record last updated
Jul 21, 2025
Medicare enrollment
Enrolled (PECOS I20210105000803); 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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Also registered at 420 E Sarnia St Ste 2100

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

  1. Theodore Barthel, LADCAddiction (Substance Use Disorder) Counselor1619509205
  2. Shari Fusillo, LPCCProfessional Counselor1699435982
  3. Kristin IsaacsonMental Health Counselor1760867337
  4. Veronica Ives-Virnig, MS, LPCCProfessional Counselor1588943963
  5. Kelli Larson, LICSWClinical Social Worker1689569865
  6. Samuel Mahr, LPCCProfessional Counselor1154914786

Verify Shelby Marx 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 26571
    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. Hiawatha Valley Mental Health Center IncWinona, MN

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

Shelby Marx among 6,609 clinical social worker records in Minnesota

Shelby Marx, MSW, LICSW is one of 6,609 clinical social worker records with a practice address in Minnesota. 24% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 42% of them.

  • NPI issued2016 · 42% of these records are older, 53% newer
  • In a Medicare fileYes · 24% of these records are
  • In the CMS Doctors and Clinicians fileYes · 31% of these records are
  • Graduated2017 · median 2014 among the 2,023 with a school on file
  • Record last updated2025 · 48% 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 Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

27 clinical social worker records list a practice address in Winona

They are 27 of the 876 NPPES records with a practice address in Winona, and 6,609 clinical social worker records in Minnesota.

The 8 clinical social worker records with the nearest ZIP codes

  1. Andrew Bohlman, LICSWWinona, MN 559871740611730
  2. Mary Chase Borgen, LICSWWinona, MN 559871295750438
  3. Mario Einsman, M.S.Winona, MN 559871336286202
  4. Gary Flynn, LICSWWinona, MN 559871710046669
  5. Dorothy Herzing, LICSWWinona, MN 559871659432912
  6. Ann Lichliter, LICSWWinona, MN 559871013190743
  7. Katherine Meyers, LICSWWinona, MN 559871477800456
  8. Andreen Midthune, LICSWWinona, MN 559871538342746

Common questions

What is Shelby Marx, MSW, LICSW's NPI number?

Shelby Marx, MSW, LICSW's National Provider Identifier (NPI) is 1699220418, issued on Aug 22, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Shelby Marx, MSW, LICSW located?

The NPPES record lists a practice address at 420 E Sarnia St Ste 2100, Winona, MN, 55987. Phone: (507) 453-6242. Providers update this record themselves, so call before visiting.

How can I verify Shelby Marx, MSW, LICSW's license?

NPPES lists Minnesota license number 26571, 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.

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.