Quick answers
- Which hospitals does Mark W. Hiser work at?
- Medicare's official clinician data lists Mark W. Hiser at 2 hospitals: Rochelle Community Hospital and Saint Anthony Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark W. Hiser see patients?
- Medicare's clinician data lists 1 practice location in Rockford, IL. Call before your visit to confirm the address.
- What is Mark W. Hiser's specialty?
- Medicare lists Cardiac Electrophysiology as the primary specialty, and also Cardiovascular Disease (Cardiology).
- Does Mark W. Hiser accept Medicare assignment?
- Yes. Medicare's clinician data says Mark W. Hiser 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 Mark W. Hiser?
- (815) 398-3000, as listed in official Medicare / NPI Registry data.
- What is Mark W. Hiser's NPI number?
- 1538184924. 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 W. Hiser works
Medicare's Facility Affiliation Data lists Mark W. Hiser at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Rochelle Community HospitalRochelle, IL · Critical Access Hospital · CCN 141312
- Saint Anthony Medical CenterRockford, IL · Acute Care Hospital · CCN 140233
Practice locations
Addresses where Mark W. Hiser is enrolled with Medicare (CMS data updated 2026-10-02).
- 444 Roxbury RdRockford, IL 61107 (815) 398‑3000
Group practices
Medicare enrollment lists Mark W. Hiser as a member of this group (CMS data updated 2026-10-02).
- OSF Multi-Specialty Group2,114 clinicians in the group
Specialties
Other cardiac electrophysiologists in Rockford
Clinicians with the same Medicare primary specialty in Rockford, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1972 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538184924 |
| 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