Quick answers
- Which hospitals does Henry R. Diggelmann work at?
- Medicare's official clinician data lists Henry R. Diggelmann at 5 hospitals: Hancock County Health System, MercyOne North Iowa Medical Center, Mitchell County Regional Health, Regional Health Services of Howard County and United Hospital District. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Henry R. Diggelmann see patients?
- Medicare's clinician data lists 7 practice locations, including Mason City, IA, Cresco, IA and Blue Earth, MN. Call before your visit to confirm the address.
- What is Henry R. Diggelmann's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does Henry R. Diggelmann accept Medicare assignment?
- Medicare's clinician data says Henry R. Diggelmann may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Henry R. Diggelmann?
- (583) 547-2101, as listed in official Medicare / NPI Registry data.
- What is Henry R. Diggelmann's NPI number?
- 1467610196. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Henry R. Diggelmann works
Medicare's Facility Affiliation Data lists Henry R. Diggelmann at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hancock County Health SystemBritt, IA · Critical Access Hospital · CCN 161307
- MercyOne North Iowa Medical CenterMason City, IA · Acute Care Hospital · CCN 160064
- Mitchell County Regional HealthOsage, IA · Critical Access Hospital · CCN 161323
- Regional Health Services of Howard CountyCresco, IA · Critical Access Hospital · CCN 161328
- United Hospital DistrictBlue Earth, MN · Critical Access Hospital · CCN 241369
Practice locations
Addresses where Henry R. Diggelmann is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1000 4th St SWMason City, IA 50401
- 235 8th Ave W, Regional Health Services of Howard CountyCresco, IA 52136 (583) 547‑2101
- 250 S Crescent DrMason City, IA 50401
- 250 S Crescent Dr, Mason City ClinicMason City, IA 50401 (641) 494‑5200
- 515 S Moore StBlue Earth, MN 56013 (507) 526‑7388
Group practices
Medicare enrollment lists Henry R. Diggelmann as a member of these groups (CMS data updated 2026-10-02).
- North Iowa Mercy Clinics302 clinicians in the group
- United Hospital District Inc50 clinicians in the group
- Mason City Clinic PC14 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Mason City
Clinicians with the same Medicare primary specialty in Mason City, IA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Iowa, Rj & L Carver College Of Medicine |
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1467610196 |
| 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