Quick answers
- Which hospitals does John M. Cahill work at?
- Medicare's official clinician data lists John M. Cahill at 1 hospital: Arnot Ogden Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John M. Cahill see patients?
- Medicare's clinician data lists 6 practice locations, including Corning, NY, Greensboro, NC and Elmira, NY. Call before your visit to confirm the address.
- What is John M. Cahill's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Nuclear Medicine.
- Does John M. Cahill accept Medicare assignment?
- Yes. Medicare's clinician data says John M. Cahill 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 John M. Cahill?
- (607) 438-1200, as listed in official Medicare / NPI Registry data.
- What is John M. Cahill's NPI number?
- 1063533875. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John M. Cahill works
Medicare's Facility Affiliation Data lists John M. Cahill at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Arnot Ogden Medical CenterElmira, NY · Acute Care Hospital · CCN 330090
Practice locations
Addresses where John M. Cahill is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 123 Conhocton St, Suite 103Corning, NY 14830 (607) 438‑1200
- 3402 Battleground AveGreensboro, NC 27410 (336) 883‑0029
- 3801 W Market StGreensboro, NC 27407 (336) 883‑0026
- 600 Fitch St, Suite 202Elmira, NY 14905 (607) 737‑4333
- 600 Roe AveElmira, NY 14905
Group practices
Medicare enrollment lists John M. Cahill as a member of these groups (CMS data updated 2026-10-02).
- Arnot Ogden Medical Center216 clinicians in the group
- Arnot Medical Services PLLC83 clinicians in the group
- Bethany Medical Center72 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in New York →
Other cardiologists in Corning
Clinicians with the same Medicare primary specialty in Corning, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1063533875 |
| 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