Quick answers
- Which hospitals does Thomas G. Lewison work at?
- Medicare's official clinician data lists Thomas G. Lewison at 3 hospitals: Glacial Ridge Hospital, Sanford Bemidji Medical Center and Sanford Worthington Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas G. Lewison see patients?
- Medicare's clinician data lists 6 practice locations, including Glenwood, MN, Worthington, MN and Bemidji, MN. Call before your visit to confirm the address.
- What is Thomas G. Lewison's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does Thomas G. Lewison accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas G. Lewison 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 Thomas G. Lewison?
- (320) 634-4521, as listed in official Medicare / NPI Registry data.
- What is Thomas G. Lewison's NPI number?
- 1790034742. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thomas G. Lewison works
Medicare's Facility Affiliation Data lists Thomas G. Lewison at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Glacial Ridge HospitalGlenwood, MN · Critical Access Hospital · CCN 241376
- Sanford Bemidji Medical CenterBemidji, MN · Acute Care Hospital · CCN 240100
- Sanford Worthington Medical CenterWorthington, MN · Acute Care Hospital · CCN 240022
Practice locations
Addresses where Thomas G. Lewison is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 10 4th Ave SEGlenwood, MN 56334 (320) 634‑4521
- 1018 6th AveWorthington, MN 56187 (507) 372‑3800
- 1300 Anne St NWBemidji, MN 56601 (218) 333‑5000
- 1611 Anne St NWBemidji, MN 56601 (218) 333‑5000
- 20 S Plum StVermillion, SD 57069 (605) 624‑9111
Group practices
Medicare enrollment lists Thomas G. Lewison as a member of these groups (CMS data updated 2026-10-02).
- Sanford Health Network351 clinicians in the group
- Sanford Health of Northern Minnesota343 clinicians in the group
- Glacial Ridge Hospital District73 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Minnesota →
Other nurse anesthetists in Glenwood
Clinicians with the same Medicare primary specialty in Glenwood, MN — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1790034742 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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