Quick answers
- Which hospitals does John C. Boys work at?
- Medicare's official clinician data lists John C. Boys at 2 hospitals: Greeneville Community Hospital and Johnson City Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Boys see patients?
- Medicare's clinician data lists 2 practice locations, including Kingsport, TN and Greeneville, TN. Call before your visit to confirm the address.
- What is John C. Boys's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does John C. Boys accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Boys 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 C. Boys?
- (423) 224-4000, as listed in official Medicare / NPI Registry data.
- What is John C. Boys's NPI number?
- 1386645240. 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 C. Boys works
Medicare's Facility Affiliation Data lists John C. Boys at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Greeneville Community HospitalGreeneville, TN · Acute Care Hospital · CCN 440050
- Johnson City Medical CenterJohnson City, TN · Acute Care Hospital · CCN 440063
Practice locations
Addresses where John C. Boys is enrolled with Medicare (CMS data updated 2026-10-02).
- 130 W Ravine RdKingsport, TN 37660 (423) 224‑4000
- 1420 Tusculum BlvdGreeneville, TN 37745 (423) 787‑5041
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Tennessee
Clinicians with the same Medicare primary specialty in Tennessee — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of South Carolina School Of Medicine |
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386645240 |
| 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