Quick answers
- Which hospitals does Mark Zemanek work at?
- Medicare's official clinician data lists Mark Zemanek at 2 hospitals: Cleveland Clinic and MH St Elizabeth Youngstown Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark Zemanek see patients?
- Medicare's clinician data lists 1 practice location in Cleveland, OH. Call before your visit to confirm the address.
- What is Mark Zemanek's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Mark Zemanek accept Medicare assignment?
- Yes. Medicare's clinician data says Mark Zemanek 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 Zemanek?
- (216) 444-3046, as listed in official Medicare / NPI Registry data.
- What is Mark Zemanek's NPI number?
- 1154065886. 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 Zemanek works
Medicare's Facility Affiliation Data lists Mark Zemanek at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cleveland ClinicCleveland, OH · Acute Care Hospital · CCN 360180
- MH St Elizabeth Youngstown HospitalYoungstown, OH · Acute Care Hospital · CCN 360064
Practice locations
Addresses where Mark Zemanek is enrolled with Medicare (CMS data updated 2026-10-02).
- 9500 Euclid AveCleveland, OH 44195 (216) 444‑3046
Group practices
Medicare enrollment lists Mark Zemanek as a member of this group (CMS data updated 2026-10-02).
- Cleveland Clinic7,090 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Cleveland
Clinicians with the same Medicare primary specialty in Cleveland, OH — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Ohio University, College Of Osteopathic Medicine |
| Graduation year | 2022 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1154065886 |
| 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