Quick answers
- Which hospitals does Daniel Ratnarajah work at?
- Medicare's official clinician data lists Daniel Ratnarajah at 1 hospital: Oneida Health Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Daniel Ratnarajah see patients?
- Medicare's clinician data lists 4 practice locations, including Oneida, NY. Call before your visit to confirm the address.
- What is Daniel Ratnarajah's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Daniel Ratnarajah accept Medicare assignment?
- Yes. Medicare's clinician data says Daniel Ratnarajah 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 Daniel Ratnarajah offer telehealth?
- Medicare's clinician data says Daniel Ratnarajah offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Daniel Ratnarajah?
- (315) 363-1345, as listed in official Medicare / NPI Registry data.
- What is Daniel Ratnarajah's NPI number?
- 1023043858. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Daniel Ratnarajah works
Medicare's Facility Affiliation Data lists Daniel Ratnarajah at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Oneida Health HospitalOneida, NY · Acute Care Hospital · CCN 330115
Practice locations
Addresses where Daniel Ratnarajah is enrolled with Medicare (CMS data updated 2026-10-02).
- 2037 Dream Catcher PlzOneida, NY 13421
- 2057 Dream Catcher PlazaOneida, NY 13421
- 2057 Dream Catcher PlzOneida, NY 13421
- 600 Seneca StOneida, NY 13421 (315) 363‑1345
Group practices
Medicare enrollment lists Daniel Ratnarajah as a member of these groups (CMS data updated 2026-10-02).
- Oneida Indian Health Services9 clinicians in the group
- Oneida Medical Associates PLLC3 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Oneida
Clinicians with the same Medicare primary specialty in Oneida, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1023043858 |
| 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