Doctor profile · Federal record
Dr. John Showalter, MD
Internal Medicine Physician (CMS: Internal Medicine) · Knoxville, TN
- NPI 1104862002
- Accepts Medicare
- 29 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
9303 Parkwest Blvd., Suite 100
Knoxville, TN 37923
(865) 690-6451
fax (865) 694-2613 - Mailing address
-
1225 E Weisgarber RD, Ste 200
Knoxville, TN 379092604
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- June 3, 2010
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Tennessee #34349
- Medicaid
- TN #3851852
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1104862002. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
11,264
Distinct HCPCS
10
Medicare allowed
$309,478
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
36415 |
Insertion of needle into vein for collection of blood sample | 1,121 | 532 | $8 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 1,007 | 528 | $8 | |
80053 |
Blood test, comprehensive group of blood chemicals | 989 | 524 | $10 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 779 | 472 | $118 | |
84443 |
Blood test, thyroid stimulating hormone (tsh) | 768 | 494 | $16 | |
80061 |
Blood test, lipids (cholesterol and triglycerides) | 725 | 493 | $13 | |
82306 |
Vitamin d-3 level | 511 | 387 | $29 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 509 | 283 | $83 | |
82607 |
Cyanocobalamin (vitamin b-12) level | 494 | 375 | $15 | |
82746 |
Folic acid level, serum | 477 | 366 | $14 |
In context: peer comparison
Among 77 peers in this city , average services per provider: 140. This provider delivers 80× the peer median.Open Payments
Industry payments received
All-time total
$1,407
Transactions
100
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 26 | $287.39 | |
| PFIZER INC. | 17 | $227.12 | |
| Abbott Laboratories | 11 | $206.18 | |
| Novo Nordisk Inc | 18 | $174.80 | |
| Amgen Inc. | 10 | $131.78 | |
| E.R. Squibb & Sons, L.L.C. | 3 | $48.40 | |
| Edwards Lifesciences Corporation | 2 | $47.71 | |
| Lilly USA, LLC | 3 | $45.39 | |
| Phathom Pharmaceuticals, Inc. | 2 | $34.14 | |
| Otsuka America Pharmaceutical, Inc. | 2 | $31.96 | |
| Bayer Healthcare Pharmaceuticals Inc. | 2 | $27.84 | |
| Astellas Pharma US Inc | 1 | $20.66 | |
| GlaxoSmithKline, LLC. | 1 | $20.63 | |
| Inspire Medical Systems, Inc. | 1 | $20.60 | |
| AstraZeneca Pharmaceuticals LP | 1 | $19.11 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
5,361
Patients
1,471
Total drug cost
$49,994
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 678 | 174 | $7,327 |
| Atorvastatin Calcium | Generic | 675 | 181 | $6,268 |
| Omeprazole | Generic | 453 | 123 | $4,303 |
| Rosuvastatin Calcium | Generic | 443 | 129 | $5,302 |
| Alprazolam | Generic | 415 | 82 | $1,634 |
| Lisinopril | Generic | 376 | 104 | $2,488 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 343 | 71 | $5,494 |
| Amlodipine Besylate | Generic | 327 | 91 | $1,579 |
| Gabapentin | Generic | 271 | 70 | $3,618 |
| Zolpidem Tartrate | Generic | 266 | 50 | $1,330 |
Hospital affiliations
Frequently asked questions
What is Dr. John Showalter's medical specialty?
Dr. John Showalter practices Internal Medicine Physician in Knoxville, TN.
Where does Dr. John Showalter practice?
Dr. John Showalter practices at 9303 Parkwest Blvd., Knoxville, TN 37923. Office phone: 8656906451.
What is Dr. John Showalter's NPI?
Dr. John Showalter's National Provider Identifier (NPI) is 1104862002, issued by NPPES.
Does Dr. John Showalter accept Medicare assignment?
Yes. Dr. John Showalter accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Showalter commonly perform?
Top Medicare-reported procedures in 2023: Insertion of needle into vein for collection of blood sample (HCPCS 36415); Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (HCPCS 85025); Blood test, comprehensive group of blood chemicals (HCPCS 80053). Source: CMS Medicare Physician & Other Practitioners file.