Quick answers
- Where does Mark S. Leone see patients?
- Medicare's clinician data lists 2 practice locations, including East Liverpool, OH and Austintown, OH. Call before your visit to confirm the address.
- What is Mark S. Leone's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Mark S. Leone accept Medicare assignment?
- Yes. Medicare's clinician data says Mark S. Leone 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 S. Leone?
- (330) 385-3898, as listed in official Medicare / NPI Registry data.
- What is Mark S. Leone's NPI number?
- 1922836899. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Mark S. Leone is enrolled with Medicare (CMS data updated 2026-10-02).
- 15655 State Route 170, Suite PEast Liverpool, OH 43920 (330) 385‑3898
- 6006 Mahoning AveAustintown, OH 44515 (330) 797‑8780
Group practices
Medicare enrollment lists Mark S. Leone as a member of these groups (CMS data updated 2026-10-02).
- Optical Solutions 2 LLC4 clinicians in the group
- Dr. Ronald L. Detwiler, O.D. Inc.3 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in East Liverpool
Clinicians with the same Medicare primary specialty in East Liverpool, OH — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922836899 |
| 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
- 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