Doctor profile · Federal record
Dr. John Zernia, MD
Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medical Services (Emergency Medicine) Physician · La Crosse, WI
- NPI 1124022728
- Accepts Medicare
- 41 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1836 South Ave
La Crosse, WI 546015429
(608) 782-7300
Credentials & registration
- NPI registered
- June 2005 — 21 yrs on file
- Profile last updated
- June 21, 2017
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- Wisconsin #27859
- Medicaid
- WI #31407300
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1124022728. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
139
Distinct HCPCS
4
Medicare allowed
$16,157
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 50 | 47 | $165 | |
99284 |
Emergency department visit with moderate level of medical decision making | 45 | 45 | $113 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 26 | 26 | $63 | |
99283 |
Emergency department visit with low level of medical decision making | 18 | 18 | $68 |
In context: peer comparison
Among 21 peers in La Crosse Emergency Medicine Physician, average services per provider: 69. This provider delivers 2.0× the peer median.Open Payments
Industry payments received
All-time total
$38,520
Transactions
12
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Takeda Pharmaceuticals U.S.A., INC. | 12 | $38,520.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
14
Patients
14
Total drug cost
$37
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 14 | 14 | $37 |
Frequently asked questions
What is Dr. John Zernia's medical specialty?
Dr. John Zernia practices Emergency Medicine Physician in La Crosse, WI.
Where does Dr. John Zernia practice?
Dr. John Zernia practices at 1836 South Ave, La Crosse, WI 546015429. Office phone: 6087827300.
What is Dr. John Zernia's NPI?
Dr. John Zernia's National Provider Identifier (NPI) is 1124022728, issued by NPPES.
Does Dr. John Zernia accept Medicare assignment?
Yes. Dr. John Zernia accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Zernia commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.