Quick answers
- Which hospitals does Harold J. Hellweg work at?
- Medicare's official clinician data lists Harold J. Hellweg at 5 hospitals: Mayo Clinic Health System - Albert Lea and Austin, Mayo Clinic Health System - Mankato, Mayo Clinic Health System - Waseca, Mayo Clinic Hospital Rochester and Owatonna Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Harold J. Hellweg see patients?
- Medicare's clinician data lists 5 practice locations, including Rochester, MN, Owatonna, MN and Albert Lea, MN. Call before your visit to confirm the address.
- What is Harold J. Hellweg's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Harold J. Hellweg accept Medicare assignment?
- Yes. Medicare's clinician data says Harold J. Hellweg 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.
- Does Harold J. Hellweg offer telehealth?
- Medicare's clinician data says Harold J. Hellweg offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Harold J. Hellweg?
- (507) 284-2511, as listed in official Medicare / NPI Registry data.
- What is Harold J. Hellweg's NPI number?
- 1790071231. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Harold J. Hellweg works
Medicare's Facility Affiliation Data lists Harold J. Hellweg 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 - Albert Lea and AustinAlbert Lea, MN · Acute Care Hospital · CCN 240043
- Mayo Clinic Health System - MankatoMankato, MN · Acute Care Hospital · CCN 240093
- Mayo Clinic Health System - WasecaWaseca, MN · Critical Access Hospital · CCN 241345
- Mayo Clinic Hospital RochesterRochester, MN · Acute Care Hospital · CCN 240010
- Owatonna HospitalOwatonna, MN · Acute Care Hospital · CCN 240069
Practice locations
Addresses where Harold J. Hellweg is enrolled with Medicare (CMS data updated 2026-10-02).
- 200 1st St SWRochester, MN 55905 (507) 284‑2511
- 200 1st SwstRochester, MN 55905
- 2200 NW 26th StOwatonna, MN 55060 (507) 451‑1120
- 2250 NW 26th StOwatonna, MN 55060 (507) 451‑3850
- 404 W Fountain StAlbert Lea, MN 56007 (507) 373‑2384
Group practices
Medicare enrollment lists Harold J. Hellweg as a member of this group (CMS data updated 2026-10-02).
- Mayo Clinic Health System-Southeast Minnesota Region551 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Rochester
Clinicians with the same Medicare primary specialty in Rochester, MN — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Lake Erie College Of Osteopathic Medicine, Erie |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1790071231 |
| 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