Dr. John C. Showalter
- Gender: Male
- Experience: 24 years
- Graduated from: University Of Kansas School Of Med (kc/wich/sal)
- Graduation year: 1997
- Sole propriator: No
- NPI: 1104862002
Dr. John C. Showalter MD
Internist
He is located at 9303 Parkwest Boulevard Suite 100 in Knoxville, TN 37923. Can help patients with the following: Asthma, Common Cold, Heart Disease, Hyponatremia, Influenza, Obesity. His National Provider Identifier (NPI) number is 1104862002. Appointment can be made via the phone number (865) 690-6451. He is affiliated with 3 practices and 2 hospitals.
Conditions treated
Dr. John C. Showalter, being an internist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. John C. Showalter.
- Abdominal Pain
- Acute Pain
- Anemia
- Arthritis
- Asthma
- Atherosclerosis
- Bladder Control
- Chest Pain
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Common Cold
- Constipation
- Cystitis
- Diarrhea
- Edema
- Fever
- Gastroesophageal Reflux Disease (GERD)
- General Care
- Headache
- Heart Disease
- Hiatal Hernia
- High Blood Pressure
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Influenza
- Inguinal Hernia
- Migraine
- Nausea and Vomiting
- Obesity
- Osteoporosis
- Peptic Ulcer
- Prescription Refill
- Urethritis
- Urinary Tract Infection (UTI)
Procedures Performed by Dr. John C. Showalter
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. John C. Showalter as in-network for the following 2026 plans.
Health plans
Alliant Health Plans, Inc.
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 9 plans from Alliant Health Plans, Inc.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| SoloCare Bronze EPO $8500 DED HSA 10004 | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| SoloCare Exp Bronze EPO $9500 DED 10015 | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| SoloCare Gold EPO $1500 DED 10010 | EPO · Gold | Preferred | Not accepting new patients |
| SoloCare Silver EPO $5000 DED 10014 | EPO · Silver | Preferred | Not accepting new patients |
| SoloCare Silver EPO $6500 DED 10013 | EPO · Silver | Preferred | Not accepting new patients |
| SoloCare Standard Exp Bronze EPO $7500 DED 10008 | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| SoloCare Standard Gold EPO $2000 DED 10006 | EPO · Gold | Preferred | Not accepting new patients |
| SoloCare Standard Platinum EPO $0 DED 10005 | EPO · Platinum | Preferred | Not accepting new patients |
| SoloCare Standard Silver EPO $6000 DED 10007 | EPO · Silver | Preferred | Not accepting new patients |
Ambetter of Tennessee
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 16 plans from Ambetter of Tennessee
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Elite Bronze | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Elite Bronze + Vision + Adult Dental | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Elite Gold | EPO · Gold | Preferred | Not accepting new patients |
| Elite Gold + Vision + Adult Dental | EPO · Gold | Preferred | Not accepting new patients |
| Enhanced Diabetes Care Silver with $0 Drug Options | EPO · Silver | Preferred | Not accepting new patients |
| Enhanced Diabetes Care Silver with $0 Drug Options + Vision + Adult Dental | EPO · Silver | Preferred | Not accepting new patients |
| Everyday Bronze | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Everyday Bronze + Vision + Adult Dental | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Everyday Gold | EPO · Gold | Preferred | Not accepting new patients |
| Everyday Gold + Vision + Adult Dental | EPO · Gold | Preferred | Not accepting new patients |
| Standard Expanded Bronze | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Standard Expanded Bronze + Vision + Adult Dental | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Standard Gold | EPO · Gold | Preferred | Not accepting new patients |
| Standard Gold + Vision + Adult Dental | EPO · Gold | Preferred | Not accepting new patients |
| Standard Silver | EPO · Silver | Preferred | Not accepting new patients |
| Standard Silver + Vision + Adult Dental | EPO · Silver | Preferred | Not accepting new patients |
BlueCross BlueShield of Tennessee
Network data as of Aug 25, 2026, as reported by the insurer.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| BlueCross B16S $50 PCP Copay + $0 virtual care from Teladoc Health® (8 plan variants) | EPO · Expanded Bronze | Blue Network S | Accepting new patients |
| BlueCross G08S $30 PCP Copay + $0 virtual care from Teladoc Health ® (8 plan variants) | EPO · Gold | Blue Network S | Accepting new patients |
| BlueCross S26S $40 PCP Copay + $0 virtual care from Teladoc Health® (8 plan variants) | EPO · Silver | Blue Network S | Accepting new patients |
Cigna Healthcare
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 10 plans from Cigna Healthcare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Connect Bronze 7500 Indiv Med Deductible | EPO · Bronze | Preferred | Not accepting new patients |
| Connect Bronze 8500 Indiv Med Deductible | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Connect Bronze CMS Standard | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Connect Gold 1500 Indiv Med Deductible | EPO · Gold | Preferred | Not accepting new patients |
| Connect Gold CMS Standard | EPO · Gold | Preferred | Not accepting new patients |
| Connect myDiabetesCare Bronze | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Connect myDiabetesCare Silver | EPO · Silver | Preferred | Not accepting new patients |
| Connect Silver 3000 Indiv Med Deductible | EPO · Silver | Preferred | Not accepting new patients |
| Connect Silver 4500 Indiv Med Deductible | EPO · Silver | Preferred | Not accepting new patients |
| Connect Silver CMS Standard | EPO · Silver | Preferred | Not accepting new patients |
Oscar Insurance Company
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 15 plans from Oscar Insurance Company
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Bronze Classic Standard | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Bronze Elite + PCP Saver Plus | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Bronze Simple | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Bronze Simple Breathe Easy with Enhanced COPD Benefits | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Bronze Simple Chronic Care CKM | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Bronze Simple Diabetes | EPO · Expanded Bronze | Preferred | Not accepting new patients |
| Gold Classic Standard | EPO · Gold | Preferred | Not accepting new patients |
| Gold Elite | EPO · Gold | Preferred | Not accepting new patients |
| Silver Classic | EPO · Silver | Preferred | Not accepting new patients |
| Silver Classic Standard | EPO · Silver | Preferred | Not accepting new patients |
| Silver Simple Breathe Easy with Enhanced COPD Benefits | EPO · Silver | Preferred | Not accepting new patients |
| Silver Simple Chronic Care CKM | EPO · Silver | Preferred | Not accepting new patients |
| Silver Simple Diabetes | EPO · Silver | Preferred | Not accepting new patients |
| Silver Simple PCP Saver | EPO · Silver | Preferred | Not accepting new patients |
| Silver Simple Women's Health with Menopause Benefits | EPO · Silver | Preferred | Not accepting new patients |
UnitedHealthcare
Network data as of Sep 16, 2026, as reported by the insurer.
Show all 12 plans from UnitedHealthcare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| UHC Bronze Copay Focus (Virtual Urgent Care, No Referrals) | EPO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Copay Focus + (Virtual Urgent Care, Dental + Vision, No Referrals) | EPO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Essential (No Referrals) | EPO · Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Standard (No Referrals) | EPO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Gold Advantage (Virtual Urgent Care, No Referrals) | EPO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Advantage + (Virtual Urgent Care, Dental + Vision, No Referrals) | EPO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Copay Focus (Virtual Urgent Care, No Referrals) | EPO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Standard (No Referrals) | EPO · Gold | Non Preferred | Accepting new patients |
| UHC Silver Advantage (Virtual Urgent Care, No Referrals) | EPO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Advantage + (Virtual Urgent Care, Dental + Vision, No Referrals) | EPO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Copay Focus (Virtual Urgent Care, No Referrals) | EPO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Standard (No Referrals) | EPO · Silver | Non Preferred | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. John C. Showalter is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. John C. Showalter is enrolled to bill Medicare as a Practitioner - Internal Medicine .
Bills through: Summit Medical Group, Pllc
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| Pfizer | $858 |
| Novo Nordisk | $846 |
| Merck | $725 |
Other
| Food and Beverage | $8523 |
Studies
UNIVERSITY OF KANSAS SCHOOL OF MED (KC/WICH/SAL)
Graduated in 1997Affiliated practices
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Questions & Answers
Has Dr. John C. Showalter affiliation with hospitals?
Dr. John C. Showalter is affiliated with PHYSICIANS REGIONAL MEDICAL CENTER. For the full list of hospitals see this list.
What conditions does Dr. John C. Showalter treat?
Dr. John C. Showalter provides treatment for Asthma, Common Cold, Heart Disease, Hyponatremia, Influenza, Obesity. For the full list see this list.
Does Dr. John C. Showalter have affiliation with practices?
Dr. John C. Showalter is affiliated with Greeneville Family Medicine. For the full list of practices see this list.
Where can you meet with Dr. John C. Showalter?
Dr. John C. Showalter's office is located at 9303 Parkwest Boulevard Suite 100 in Knoxville, TN 37923.
Does Dr. John C. Showalter accept patients with Ambetter of Tennessee?
Yes, Dr. John C. Showalter is listed in-network for Ambetter of Tennessee through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.