Quick answers
- Which hospitals does Hersi C. Moallin work at?
- Medicare's official clinician data lists Hersi C. Moallin at 1 hospital: MercyOne North Iowa Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Hersi C. Moallin see patients?
- Medicare's clinician data lists 4 practice locations, including Mason City, IA and Northwood, IA. Call before your visit to confirm the address.
- What is Hersi C. Moallin's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Hersi C. Moallin accept Medicare assignment?
- Yes. Medicare's clinician data says Hersi C. Moallin 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 Hersi C. Moallin?
- (641) 428-6000, as listed in official Medicare / NPI Registry data.
- What is Hersi C. Moallin's NPI number?
- 1154818953. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Hersi C. Moallin works
Medicare's Facility Affiliation Data lists Hersi C. Moallin at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- MercyOne North Iowa Medical CenterMason City, IA · Acute Care Hospital · CCN 160064
Practice locations
Addresses where Hersi C. Moallin is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 4th St SWMason City, IA 50401
- 1631 4th St SW, 114b Mercyone North Iowa Women'S Health CarMason City, IA 50401 (641) 428‑6000
- 621 S Illinois Ave, 100 Mercyone Regency Family MedicineMason City, IA 50401 (641) 428‑6900
- 803 9th Ave N, Mercyone Northwood Family MedicineNorthwood, IA 50459 (641) 324‑1221
Group practices
Medicare enrollment lists Hersi C. Moallin as a member of this group (CMS data updated 2026-10-02).
- North Iowa Mercy Clinics302 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Mason City
Clinicians with the same Medicare primary specialty in Mason City, IA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1154818953 |
| 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