Quick answers
- Which hospitals does William P. Tarrant work at?
- Medicare's official clinician data lists William P. Tarrant at 5 hospitals: Dublin Methodist Hospital, Marion General Hospital, MercyOne Waterloo Medical Center, OhioHealth Mansfield Hospital and Riverside Methodist Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William P. Tarrant see patients?
- Medicare's clinician data lists 24 practice locations, including Marion, OH, Columbus, OH and Willard, OH. Call before your visit to confirm the address.
- What is William P. Tarrant's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does William P. Tarrant accept Medicare assignment?
- Yes. Medicare's clinician data says William P. Tarrant 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 William P. Tarrant?
- (614) 458-9000, as listed in official Medicare / NPI Registry data.
- What is William P. Tarrant's NPI number?
- 1265411375. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William P. Tarrant works
Medicare's Facility Affiliation Data lists William P. Tarrant at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Dublin Methodist HospitalDublin, OH · Acute Care Hospital · CCN 360348
- Marion General HospitalMarion, OH · Acute Care Hospital · CCN 360011
- MercyOne Waterloo Medical CenterWaterloo, IA · Acute Care Hospital · CCN 160067
- OhioHealth Mansfield HospitalMansfield, OH · Acute Care Hospital · CCN 360118
- Riverside Methodist HospitalColumbus, OH · Acute Care Hospital · CCN 360006
Practice locations
Addresses where William P. Tarrant is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 24; the Medicare profile lists all.
- 1069 Delaware AveMarion, OH 43302
- 1087 Dennison AveColumbus, OH 43201 (614) 458‑9000
- 110 E Howard StWillard, OH 44890 (419) 964‑5000
- 1106 Colegate DrMarietta, OH 45750 (740) 568‑2000
- 139 Garau StBluffton, OH 45817 (419) 358‑9010
Group practices
Medicare enrollment lists William P. Tarrant as a member of these groups (CMS data updated 2026-10-02).
- Riverside Radiology and Interventional Associates Inc253 clinicians in the group
- Lucidsolutions Inc61 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Marion
Clinicians with the same Medicare primary specialty in Marion, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | West Virginia University School Of Medicine |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265411375 |
| 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