Quick answers
- Where does Sean Leonard see patients?
- Medicare's clinician data lists 5 practice locations, including Alliance, OH, Newton Falls, OH and Warren, OH. Call before your visit to confirm the address.
- What is Sean Leonard's specialty?
- Medicare lists Family Practice as the primary specialty, and also Addiction Medicine.
- Does Sean Leonard accept Medicare assignment?
- Yes. Medicare's clinician data says Sean Leonard 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 Sean Leonard?
- (330) 821-3961, as listed in official Medicare / NPI Registry data.
- What is Sean Leonard's NPI number?
- 1700258241. 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 Sean Leonard is enrolled with Medicare (CMS data updated 2026-10-02).
- 1390 S Arch AveAlliance, OH 44601 (330) 821‑3961
- 175 E Broad StNewton Falls, OH 44444 (330) 872‑2010
- 1977 Niles Rd SEWarren, OH 44484 (330) 393‑6446
- 3132 Belmont Ave, Suite BYoungstown, OH 44505 (877) 722‑3303
- 726 Wick AveYoungstown, OH 44505
Group practices
Medicare enrollment lists Sean Leonard as a member of this group (CMS data updated 2026-10-02).
- Ohio North East Health Systems Inc34 clinicians in the group
Specialties
- Family Practiceprimary
- Addiction Medicinealso
Other family doctors in Alliance
Clinicians with the same Medicare primary specialty in Alliance, OH — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Lake Erie College Of Osteopathic Medicine, Erie |
| Graduation year | 2015 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700258241 |
| 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