Quick answers
- Which hospitals does John C. Showalter work at?
- Medicare's official clinician data lists John C. Showalter at 5 hospitals: Fort Sanders Regional Medical Center, Methodist Medical Center of Oak Ridge, Parkwest Medical Center, Physicians Regional Medical Center and University Health System, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Showalter see patients?
- Medicare's clinician data lists 11 practice locations, including Loudon, TN, Knoxville, TN and Powell, TN. Call before your visit to confirm the address.
- What is John C. Showalter's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does John C. Showalter accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Showalter 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. Showalter?
- (865) 408-9344, as listed in official Medicare / NPI Registry data.
- What is John C. Showalter's NPI number?
- 1104862002. 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. Showalter works
Medicare's Facility Affiliation Data lists John C. Showalter at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Fort Sanders Regional Medical CenterKnoxville, TN · Acute Care Hospital · CCN 440125
- Methodist Medical Center of Oak RidgeOak Ridge, TN · Acute Care Hospital · CCN 440034
- Parkwest Medical CenterKnoxville, TN · Acute Care Hospital · CCN 440173
- Physicians Regional Medical CenterPowell, TN · Acute Care Hospital · CCN 440120
- University Health System, IncKnoxville, TN · Acute Care Hospital · CCN 440015
Practice locations
Addresses where John C. Showalter is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 11; the Medicare profile lists all.
- 101 Cherokee Pl, Suite 107Loudon, TN 37774 (865) 408‑9344
- 103 Midlake Dr LevelKnoxville, TN 37918 (865) 687‑7704
- 1225 E Weisgarber Rd, Suite 200Knoxville, TN 37849 (865) 938‑3627
- 1275 Dick Lonas RdKnoxville, TN 37909
- 1275 Dick Lonas Rd, Unit 101Knoxville, TN 37909
Group practices
Medicare enrollment lists John C. Showalter as a member of these groups (CMS data updated 2026-10-02).
- Physiotherapy Associates Inc1,460 clinicians in the group
- Summit Medical Group, PLLC652 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Loudon
Clinicians with the same Medicare primary specialty in Loudon, TN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Kansas School Of Med (kc/wich/sal) |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104862002 |
| 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