Quick answers
- Does Sarah O. Castiglia accept Medicare assignment?
- Yes. Medicare's clinician data says Sarah O. Castiglia accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Sarah O. Castiglia's NPI number?
- 1518456821. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sarah O. Castiglia works
Medicare's Facility Affiliation Data lists Sarah O. Castiglia at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Greenfield Area Medical CenterGreenfield, OH · Critical Access Hospital · Emergency services: listed by Medicare · CCN 361304
- Highland District HospitalHillsboro, OH · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 361332
Practice locations
Addresses where Sarah O. Castiglia is enrolled with Medicare (CMS data updated October 2, 2026).
- 1108 Northview Dr, Suite 1Hillsboro, OH 45133 (937) 393‑5781
- 218 Stern RdSeaman, OH 45679 (937) 386‑1379
Group practices
Medicare enrollment lists Sarah O. Castiglia as a member of this group (CMS data updated October 2, 2026).
- Healthsource of Ohio Inc56 clinicians in the group
Specialties
- Internal Medicineprimary
- Pediatric Medicinealso
Other internal medicine doctors in Hillsboro
Clinicians with the same Medicare primary specialty in Hillsboro, OH — not a recommendation.
Other clinicians in Healthsource of Ohio Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Ohio University, College Of Osteopathic Medicine |
| Graduation year | 2018 (8 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1518456821 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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