Doctor profile · Federal record
Dr. Sean Marquis, MD
Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medicine Physician · Emergency Medicine Physician · Janesville, WI
- NPI 1053554089
- Accepts Medicare
- 17 yrs in practice
- Licensed in 3 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1000 Mineral Point Ave
Janesville, WI 535482940
(608) 756-6611
fax (608) 756-6177
Credentials & registration
- NPI registered
- April 2009 — 17 yrs on file
- Profile last updated
- June 10, 2014
- Year of graduation
- 2009 — 17 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State licenses (3)
- Wisconsin #46924-20 · Ohio #35097788 · Michigan #4301099517
- Medicaid
- WI #1053554089
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1053554089. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
51
Distinct HCPCS
2
Medicare allowed
$7,222
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 27 | 27 | $166 | |
99284 |
Emergency department visit with moderate level of medical decision making | 24 | 24 | $114 |
In context: peer comparison
Among 19 peers in this city , average services per provider: 75. This provider delivers 0.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
97
Patients
97
Total drug cost
$766
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 24 | 24 | $91 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 18 | 18 | $74 |
| Cephalexin | Generic | 15 | 15 | $121 |
| Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) | Brand | 15 | 15 | $333 |
| Ondansetron Odt (Ondansetron) | Brand | 14 | 14 | $96 |
| Azithromycin | Generic | 11 | 11 | $52 |
Frequently asked questions
What is Dr. Sean Marquis's medical specialty?
Dr. Sean Marquis practices Emergency Medicine Physician in Janesville, WI.
Where does Dr. Sean Marquis practice?
Dr. Sean Marquis practices at 1000 Mineral Point Ave, Janesville, WI 535482940. Office phone: 6087566611.
What is Dr. Sean Marquis's NPI?
Dr. Sean Marquis's National Provider Identifier (NPI) is 1053554089, issued by NPPES.
Does Dr. Sean Marquis accept Medicare assignment?
Yes. Dr. Sean Marquis accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sean Marquis 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). Source: CMS Medicare Physician & Other Practitioners file.