Quick answers
- Which hospitals does John C. Horner Iii work at?
- Medicare's official clinician data lists John C. Horner Iii at 1 hospital: Morristown Hamblen Hospital Association. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Horner Iii see patients?
- Medicare's clinician data lists 1 practice location in Morristown, TN. Call before your visit to confirm the address.
- What is John C. Horner Iii's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does John C. Horner Iii accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Horner Iii 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. Horner Iii?
- (423) 587-5283, as listed in official Medicare / NPI Registry data.
- What is John C. Horner Iii's NPI number?
- 1760414635. 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. Horner Iii works
Medicare's Facility Affiliation Data lists John C. Horner Iii at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Morristown Hamblen Hospital AssociationMorristown, TN · Acute Care Hospital · CCN 440030
Practice locations
Addresses where John C. Horner Iii is enrolled with Medicare (CMS data updated 2026-10-02).
- 538 W 6th N StMorristown, TN 37814 (423) 587‑5283
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Morristown
Clinicians with the same Medicare primary specialty in Morristown, TN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Tennessee, Hsc, College Of Medicine |
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1760414635 |
| 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