Quick answers
- Which hospitals does Lewis Hahn work at?
- Medicare's official clinician data lists Lewis Hahn at 3 hospitals: Mayo Clinic Health System - Mankato, Mayo Clinic Health System-Franciscan Medical Center Inc and Mayo Clinic Hospital Rochester. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Lewis Hahn see patients?
- Medicare's clinician data lists 5 practice locations, including Mankato, MN, Rochester, MN and La Crosse, WI. Call before your visit to confirm the address.
- What is Lewis Hahn's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Lewis Hahn accept Medicare assignment?
- Yes. Medicare's clinician data says Lewis Hahn 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 Lewis Hahn?
- (507) 625-4031, as listed in official Medicare / NPI Registry data.
- What is Lewis Hahn's NPI number?
- 1023455854. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Lewis Hahn works
Medicare's Facility Affiliation Data lists Lewis Hahn at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mayo Clinic Health System - MankatoMankato, MN · Acute Care Hospital · CCN 240093
- Mayo Clinic Health System-Franciscan Medical Center IncLa Crosse, WI · Acute Care Hospital · CCN 520004
- Mayo Clinic Hospital RochesterRochester, MN · Acute Care Hospital · CCN 240010
Practice locations
Addresses where Lewis Hahn is enrolled with Medicare (CMS data updated 2026-10-02).
- 1025 Marsh StMankato, MN 56001 (507) 625‑4031
- 200 1st St SWRochester, MN 55905 (507) 284‑2511
- 200 1st SwstRochester, MN 55905
- 800 W Ave SLa Crosse, WI 54601 (608) 785‑0940
- 825 Mankato AveWinona, MN 55987 (507) 457‑4149
Group practices
Medicare enrollment lists Lewis Hahn as a member of these groups (CMS data updated 2026-10-02).
- Mayo Clinic4,956 clinicians in the group
- Mayo Clinic Health System-Northwest Wisconsin Region Inc802 clinicians in the group
- Mayo Clinic Health System-Southwest Minnesota Region661 clinicians in the group
- Mayo Clinic Health System-Southwest Wisconsin Region Inc534 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Mankato
Clinicians with the same Medicare primary specialty in Mankato, MN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Yale University School Of Medicine |
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023455854 |
| 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