Quick answers
- Which hospitals does Nathaniel A. Ratnasamy work at?
- Medicare's official clinician data lists Nathaniel A. Ratnasamy at 5 hospitals: Blanchard Valley Hospital, Bluffton Hospital, Fostoria Community Hospital, Mercy Health - Tiffin Hospital and Wyandot Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nathaniel A. Ratnasamy see patients?
- Medicare's clinician data lists 2 practice locations, including Findlay, OH. Call before your visit to confirm the address.
- What is Nathaniel A. Ratnasamy's specialty?
- Medicare lists Infectious Disease as the primary specialty, and also Internal Medicine.
- Does Nathaniel A. Ratnasamy accept Medicare assignment?
- Yes. Medicare's clinician data says Nathaniel A. Ratnasamy 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.
- Does Nathaniel A. Ratnasamy offer telehealth?
- Medicare's clinician data says Nathaniel A. Ratnasamy offers telehealth services. Ask the office which visits can be done by video or phone.
- What is Nathaniel A. Ratnasamy's NPI number?
- 1558363317. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nathaniel A. Ratnasamy works
Medicare's Facility Affiliation Data lists Nathaniel A. Ratnasamy at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Blanchard Valley HospitalFindlay, OH · Acute Care Hospital · CCN 360095
- Bluffton HospitalBluffton, OH · Critical Access Hospital · CCN 361322
- Fostoria Community HospitalFostoria, OH · Critical Access Hospital · CCN 361318
- Mercy Health - Tiffin HospitalTiffin, OH · Acute Care Hospital · CCN 360089
- Wyandot Memorial HospitalUpper Sandusky, OH · Critical Access Hospital · CCN 361329
Practice locations
Addresses where Nathaniel A. Ratnasamy is enrolled with Medicare (CMS data updated 2026-10-02).
- 1900 S Main StFindlay, OH 45840
- 300 W Wallace StFindlay, OH 45840
Group practices
Medicare enrollment lists Nathaniel A. Ratnasamy as a member of this group (CMS data updated 2026-10-02).
- Specialty Physicians of Blanchard Valley LLC113 clinicians in the group
Specialties
- Infectious Diseaseprimary
- Internal Medicinealso
Other infectious disease doctors in Ohio
Clinicians with the same Medicare primary specialty in Ohio — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of North Dakota School Of Medicine |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1558363317 |
| 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