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Edit this profileAt a glance
- 9303 Parkwest Blvd., Suite 100, Knoxville, TN 37923
About Dr. Showalter
John C. Showalter, MD practices internal medicine in Knoxville, TN. John is a 1997 graduate of University of Kansas School of Med (Kc/Wich/Sal). According to Medicare claims data, John cared for 6,103 Medicare patients across 11,917 services. The services billed most often include injection, methylprednisolone acetate, 1 mg, insertion of needle into vein for collection of blood sample, and complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count. The provider's National Provider Identifier (NPI) is 1104862002.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (865) 690-6451
- Email not available
Practice Locations
9303 PARKWEST BLVD. SUITE 100
Knoxville, TN 37923
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
Brain & Nerves
Brain and nerves
Cardiac and vascular
Digestive
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive and evaluation
- Medication management
- Post-hospital transitional care
Screening and diagnostic testing
Bones & Joints
Brain and nerves
Cancer screening
- Colon Cancer Screening Referral
- Mammogram Referral
Digestive
Exams & Consultations
Heart & Circulation
Heart health
- Cardiac Stress Test Referral
Imaging referral
- Abdominal Ultrasound Referral
Immunizations
Lab tests
Lungs & Breathing
- At-Home Sleep Study Order
Metabolic & Weight
- Weight Loss Injections and Medication
Minor procedures
Office procedures
Office Procedures
- Skin Tag and Mole Removal
- Vitamin B12 Injections
- Wart Removal
Pain management
Preventive & Routine Care
Screenings & Diagnostics
Sexual health
- STI Testing
Procedures Most Often Billed to Medicare
11,917 services · 6,103 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
1,014 | More than most peers in Internal Medicine |
| X-ray of chest, 2 views | Imaging | 71046 |
106 | More often than most peers in Internal Medicine |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
166 | More often than most peers in Internal Medicine |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
2,400 | More often than most peers in Internal Medicine |
| Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg | Drug given | J3420 |
84 | More often than most peers in Internal Medicine |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
909 | More than most peers in Internal Medicine |
| Blood test, comprehensive group of blood chemicals | Lab test | 80053 |
905 | More than most peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
809 | More than most peers in Internal Medicine |
| Blood test, thyroid stimulating hormone (tsh) | Lab test | 84443 |
699 | More than most peers in Internal Medicine |
| Blood test, lipids (cholesterol and triglycerides) | Lab test | 80061 |
669 | More than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Other internists in Knoxville 8
Same specialty, same city.
Trained at University of Kansas School of Med (Kc/Wich/Sal) 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1997 at University of Kansas School of Med (Kc/Wich/Sal) 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in TN who bill this service to Medicare most often.
Common questions
What is Dr. Showalter's specialty?
Dr. Showalter is an internist in Knoxville, TN. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Where can I find Dr. Showalter?
Dr. Showalter is listed at 9303 Parkwest Blvd. Suite 100, Knoxville, TN 37923. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Showalter?
The number on file is (865) 690-6451. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Showalter's NPI number?
Dr. Showalter's National Provider Identifier is 1104862002. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Showalter's medical education?
Dr. Showalter attended University of Kansas School of Med (Kc/Wich/Sal), graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Showalter been practicing?
Dr. Showalter has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Showalter known for?
According to Medicare billing data, Dr. Showalter performs procedures including insertion of needle into vein for collection of blood sample; reads or performs imaging such as x-ray of chest, 2 views; provides treatments such as injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Showalter confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Showalter. If this is you, claiming it is free.
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