Doctor profile · Federal record
Dr. John Merchlewitz, MD
Family Medicine Physician · Family Medicine Physician · Onalaska, WI
- NPI 1609886100
- 20 yrs on file
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3111 Gundersen Dr
Onalaska, WI 546508447
(608) 775-8630 - Mailing address
-
1836 South Ave
La Crosse, WI 546015429
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- November 6, 2015
- Specialty taxonomy
- 207Q00000X — NUCC code
- State licenses (2)
- Wisconsin #34858 · Minnesota #38261
- Medicaid
- MN #739222200
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1609886100. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
190
Distinct HCPCS
2
Medicare allowed
$14,061
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 128 | 119 | $64 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 62 | 61 | $94 |
In context: peer comparison
Among 18 peers in this city , average services per provider: 87. This provider delivers 2.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
136
Patients
133
Total drug cost
$968
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Doxycycline Monohydrate | Generic | 42 | 42 | $394 |
| Prednisone | Generic | 32 | 29 | $109 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 20 | 20 | $35 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 17 | 17 | $151 |
| Cefadroxil | Generic | 14 | 14 | $154 |
| Methylprednisolone | Generic | 11 | 11 | $125 |
Frequently asked questions
What is Dr. John Merchlewitz's medical specialty?
Dr. John Merchlewitz practices Family Medicine Physician in Onalaska, WI.
Where does Dr. John Merchlewitz practice?
Dr. John Merchlewitz practices at 3111 Gundersen Dr, Onalaska, WI 546508447. Office phone: 6087758630.
What is Dr. John Merchlewitz's NPI?
Dr. John Merchlewitz's National Provider Identifier (NPI) is 1609886100, issued by NPPES.
What procedures does Dr. John Merchlewitz commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.