NPPES file of Aug 9, 2026

William J. Sieben

Marriage & Family Therapist · Isanti, MN

William J. Sieben is a marriage & family therapist with a practice address in Isanti, Minnesota, and NPI 1659150845, issued on Sep 26, 2023. Check the license (Minnesota 4510, 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
1659150845
Name
William J. Sieben
Primary taxonomy
Marriage & Family Therapist 106H00000X
License number
4510 MN
Self-reported in NPPES; status is on the state search
Practice location
201 West Main St., Isanti, MN 55040
Phone
(763) 600-2911
Enumerated
Sep 26, 2023
Record last updated
Nov 22, 2023
Fax
(763) 244-1243
Medicare enrollment
Enrolled (PECOS I20240102001976); 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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Verify William J. Sieben 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 4510
    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. Serenity Circle Counseling LLCIsanti, MN

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

William J. Sieben among 3,101 marriage & family therapist records in Minnesota

William J. Sieben is one of 3,101 marriage & family therapist records with a practice address in Minnesota. 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 2023, is newer than 87% of them.

  • NPI issued2023 · 87% of these records are older, 9% newer
  • In a Medicare fileYes · 22% of these records are
  • In the CMS Doctors and Clinicians fileYes · 30% of these records are
  • Graduated2018 · median 2012 among the 923 with a school on file
  • Record last updated2023 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 106H00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

8 marriage & family therapist records list a practice address in Isanti

They are 8 of the 77 NPPES records with a practice address in Isanti, and 3,101 marriage & family therapist records in Minnesota.

The 8 marriage & family therapist records with the nearest ZIP codes

  1. Deanna Austin, MA, LMFTIsanti, MN 550401831328723
  2. Katherine Bluhm, LMFTIsanti, MN 550401245087428
  3. Stephanie Ruppert, LMFTIsanti, MN 550401972230845
  4. Kathryn Schesso, LMFTIsanti, MN 550401356422760
  5. Wendy Stenberg, LAMFTIsanti, MN 550401558651851
  6. Ehlan Thompson, LMFTIsanti, MN 550401881917110
  7. Wendy Wade, LMFTIsanti, MN 550401114217148
  8. Michelle Bothun, MA, LMFTHugo, MN 550381639648538

Common questions

What is William J. Sieben's NPI number?

William J. Sieben's National Provider Identifier (NPI) is 1659150845, issued on Sep 26, 2023. An NPI identifies a provider in billing; it is not a license.

Where is William J. Sieben located?

The NPPES record lists a practice address at 201 West Main St., Isanti, MN, 55040. Phone: (763) 600-2911. Providers update this record themselves, so call before visiting.

How can I verify William J. Sieben's license?

NPPES lists Minnesota license number 4510, 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.