Quick answers
- Which hospitals does Mark I. Hong work at?
- Medicare's official clinician data lists Mark I. Hong at 5 hospitals: Franklin General Hospital, Hancock County Health System, Kossuth Regional Health Center, MercyOne North Iowa Medical Center and Mitchell County Regional Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark I. Hong see patients?
- Medicare's clinician data lists 2 practice locations, including Mason City, IA and Britt, IA. Call before your visit to confirm the address.
- What is Mark I. Hong's specialty?
- Medicare lists Nephrology as the primary specialty, and also Internal Medicine.
- Does Mark I. Hong accept Medicare assignment?
- Yes. Medicare's clinician data says Mark I. Hong 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 Mark I. Hong offer telehealth?
- Medicare's clinician data says Mark I. Hong offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark I. Hong?
- (641) 843-5050, as listed in official Medicare / NPI Registry data.
- What is Mark I. Hong's NPI number?
- 1982048286. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark I. Hong works
Medicare's Facility Affiliation Data lists Mark I. Hong at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Franklin General HospitalHampton, IA · Critical Access Hospital · CCN 161308
- Hancock County Health SystemBritt, IA · Critical Access Hospital · CCN 161307
- Kossuth Regional Health CenterAlgona, IA · Critical Access Hospital · CCN 161353
- MercyOne North Iowa Medical CenterMason City, IA · Acute Care Hospital · CCN 160064
- Mitchell County Regional HealthOsage, IA · Critical Access Hospital · CCN 161323
Practice locations
Addresses where Mark I. Hong is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 4th St SWMason City, IA 50401
- 532 1st St NW, Britt Medical ClinicBritt, IA 50423 (641) 843‑5050
Group practices
Medicare enrollment lists Mark I. Hong as a member of these groups (CMS data updated 2026-10-02).
- North Iowa Mercy Clinics302 clinicians in the group
- Hancock County Health System14 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in Iowa
Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2010 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1982048286 |
| 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