Quick answers
- Which hospitals does Thaddeus P. Oneill work at?
- Medicare's official clinician data lists Thaddeus P. Oneill at 3 hospitals: Miami Valley Hospital, Ohio Valley Surgical Hospital and Upper Valley Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thaddeus P. Oneill see patients?
- Medicare's clinician data lists 1 practice location in Dayton, OH. Call before your visit to confirm the address.
- What is Thaddeus P. Oneill's specialty?
- Medicare lists Plastic and Reconstructive Surgery as the primary specialty.
- Does Thaddeus P. Oneill accept Medicare assignment?
- Yes. Medicare's clinician data says Thaddeus P. Oneill 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 Thaddeus P. Oneill?
- (937) 228-5115, as listed in official Medicare / NPI Registry data.
- What is Thaddeus P. Oneill's NPI number?
- 1699714873. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thaddeus P. Oneill works
Medicare's Facility Affiliation Data lists Thaddeus P. Oneill at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Miami Valley HospitalDayton, OH · Acute Care Hospital · CCN 360051
- Ohio Valley Surgical HospitalSpringfield, OH · Acute Care Hospital · CCN 360355
- Upper Valley Medical CenterTroy, OH · Acute Care Hospital · CCN 360174
Practice locations
Addresses where Thaddeus P. Oneill is enrolled with Medicare (CMS data updated 2026-10-02).
- 1520 S Main St, Suite 200Dayton, OH 45409 (937) 228‑5115
Group practices
Medicare enrollment lists Thaddeus P. Oneill as a member of this group (CMS data updated 2026-10-02).
- Dermatologists of Southwestern Ohio, LLC116 clinicians in the group
Specialties
Find other Plastic and Reconstructive Surgery doctors in Ohio →
Other plastic surgeons in Ohio
Clinicians with the same Medicare primary specialty in Ohio — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rush Medical College Of Rush University |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699714873 |
| 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