Quick answers
- Where does Sidney S. Thimm see patients?
- Medicare's clinician data lists 2 practice locations, including Duluth, MN and Cloquet, MN. Call before your visit to confirm the address.
- What is Sidney S. Thimm's specialty?
- Medicare lists Mental Health Counselor as the primary specialty.
- Does Sidney S. Thimm accept Medicare assignment?
- Yes. Medicare's clinician data says Sidney S. Thimm accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Sidney S. Thimm?
- (218) 728-4491, as listed in official Medicare / NPI Registry data.
- What is Sidney S. Thimm's NPI number?
- 1306709555. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Sidney S. Thimm is enrolled with Medicare (CMS data updated 2026-10-02).
- 120 W 2nd StDuluth, MN 55802 (218) 728‑4491
- 40 11th StCloquet, MN 55720 (218) 879‑4559
Group practices
Medicare enrollment lists Sidney S. Thimm as a member of this group (CMS data updated 2026-10-02).
- Human Development Center35 clinicians in the group
Specialties
- Mental Health Counselorprimary
Other mental health counselors in Duluth
Clinicians with the same Medicare primary specialty in Duluth, MN — not a recommendation.
Clinician information
| Graduation year | 2023 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1306709555 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians