Doctor profile · Federal record
Dr. John Ewalt, M.D.
Internal Medicine Physician · Madison, WI
- NPI 1518923283
- MIPS 81.7 / 100 · 2023
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4410 Regent St
Madison, WI 537054901
(608) 233-9746
fax (608) 233-0026
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- April 29, 2008
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Wisconsin #24908-020
- Medicaid
- WI #30461000
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1518923283. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
684
Distinct HCPCS
10
Medicare allowed
$25,257
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
36415 |
Insertion of needle into vein for collection of blood sample | 154 | 115 | $8 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 102 | 87 | $122 | |
80048 |
Blood test, basic group of blood chemicals (calcium, total) | 98 | 83 | $8 | |
80061 |
Blood test, lipids (cholesterol and triglycerides) | 66 | 62 | $13 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 58 | 49 | $86 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 42 | 36 | $8 | |
84443 |
Blood test, thyroid stimulating hormone (tsh) | 33 | 28 | $16 | |
83036 |
Hemoglobin a1c level | 26 | 23 | $10 | |
81001 |
Manual urinalysis test with examination using microscope, automated | 21 | 16 | $3 | |
84439 |
Thyroxine (thyroid chemical), free | 18 | 13 | $9 |
In context: peer comparison
Among 76 peers in Madison Internal Medicine Physician, average services per provider: 80. This provider delivers 8.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,156
Patients
772
Total drug cost
$150,061
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 273 | 87 | $3,653 |
| Amlodipine Besylate | Generic | 258 | 93 | $2,724 |
| Lisinopril | Generic | 230 | 87 | $2,613 |
| Levothyroxine Sodium | Generic | 185 | 66 | $2,962 |
| Metoprolol Succinate | Generic | 185 | 65 | $3,848 |
| Omeprazole | Generic | 136 | 53 | $2,198 |
| Simvastatin | Generic | 135 | 49 | $1,451 |
| Losartan Potassium | Generic | 132 | 50 | $1,797 |
| Eliquis (Apixaban) | Brand | 118 | 34 | $121,588 |
| Furosemide | Generic | 108 | 44 | $876 |
Frequently asked questions
What is Dr. John Ewalt's medical specialty?
Dr. John Ewalt practices Internal Medicine Physician in Madison, WI.
Where does Dr. John Ewalt practice?
Dr. John Ewalt practices at 4410 Regent St, Madison, WI 537054901. Office phone: 6082339746.
What is Dr. John Ewalt's NPI?
Dr. John Ewalt's National Provider Identifier (NPI) is 1518923283, issued by NPPES.
What procedures does Dr. John Ewalt commonly perform?
Top Medicare-reported procedures in 2023: Insertion of needle into vein for collection of blood sample (HCPCS 36415); Established patient office or other outpatient visit (HCPCS 99214); Blood test, basic group of blood chemicals (calcium, total) (HCPCS 80048). Source: CMS Medicare Physician & Other Practitioners file.