Quick answers
- Which hospitals does Mark Alfonso work at?
- Medicare's official clinician data lists Mark Alfonso at 5 hospitals: Berger Hospital, Dublin Methodist Hospital, Genesis Hospital, OhioHealth Mansfield Hospital and Riverside Methodist Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark Alfonso see patients?
- Medicare's clinician data lists 9 practice locations, including Las Vegas, NV, Portsmouth, OH and Zanesville, OH. Call before your visit to confirm the address.
- What is Mark Alfonso's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Mark Alfonso accept Medicare assignment?
- Yes. Medicare's clinician data says Mark Alfonso 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 Alfonso?
- (614) 340-7740, as listed in official Medicare / NPI Registry data.
- What is Mark Alfonso's NPI number?
- 1548264872. 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 Alfonso works
Medicare's Facility Affiliation Data lists Mark Alfonso at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Berger HospitalCircleville, OH · Acute Care Hospital · CCN 360170
- Dublin Methodist HospitalDublin, OH · Acute Care Hospital · CCN 360348
- Genesis HospitalZanesville, OH · Acute Care Hospital · CCN 360039
- OhioHealth Mansfield HospitalMansfield, OH · Acute Care Hospital · CCN 360118
- Riverside Methodist HospitalColumbus, OH · Acute Care Hospital · CCN 360006
Practice locations
Addresses where Mark Alfonso is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 10770 Las Vegas Blvd SLas Vegas, NV 89183 (614) 340‑7740
- 1805 27th StPortsmouth, OH 45662 (740) 356‑8681
- 2951 Maple AveZanesville, OH 43701 (614) 340‑7740
- 335 Glessner AveMansfield, OH 44903 (614) 340‑7740
- 3535 Olentangy River RdColumbus, OH 43214 (614) 566‑5000
Group practices
Medicare enrollment lists Mark Alfonso as a member of these groups (CMS data updated 2026-10-02).
- Somc Medical Care Foundation, Inc.389 clinicians in the group
- Riverside Radiology and Interventional Associates Inc253 clinicians in the group
- Lucidsolutions Inc61 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Las Vegas
Clinicians with the same Medicare primary specialty in Las Vegas, NV — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northeastern Ohio University College Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548264872 |
| 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