Doctor profile · Federal record
Dr. Corey Massey, M.D.
Emergency Medicine Physician · Emergency Medicine Physician · Emergency Medicine Physician · Emergency Medicine Physician · Marshfield, WI
- NPI 1447245816
- 21 yrs on file
- Licensed in 3 states
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1000 N Oak Ave
Marshfield, WI 544495703
(715) 387-5511 - Additional location
-
2845 Greenbrier RD
Green Bay, WI 543116519
(920) 288-4060
Credentials & registration
- NPI registered
- September 2005 — 21 yrs on file
- Profile last updated
- January 9, 2023
- Specialty taxonomy
- 207P00000X — NUCC code
- State licenses (4)
- Wisconsin #57059 · Wisconsin #17740 · Florida #ME89433 · Colorado #45007
- Medicaid
- FL #270683100
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1447245816. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
263
Distinct HCPCS
4
Medicare allowed
$39,965
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 166 | 159 | $166 | |
99284 |
Emergency department visit with moderate level of medical decision making | 51 | 50 | $114 | |
99291 |
Critical care, first 30-74 minutes | 26 | 25 | $202 | |
99283 |
Emergency department visit with low level of medical decision making | 20 | 20 | $68 |
In context: peer comparison
Among 5 peers in Marshfield Emergency Medicine Physician, average services per provider: 58. This provider delivers 4.5× the peer median.Open Payments
Industry payments received
All-time total
$17
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Pfizer INC. | 1 | $16.67 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
59
Patients
59
Total drug cost
$252
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 20 | 20 | $41 |
| Cephalexin | Generic | 14 | 14 | $117 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 14 | 14 | $41 |
| Ondansetron Odt (Ondansetron) | Brand | 11 | 11 | $53 |
Frequently asked questions
What is Dr. Corey Massey's medical specialty?
Dr. Corey Massey practices Emergency Medicine Physician in Marshfield, WI.
Where does Dr. Corey Massey practice?
Dr. Corey Massey practices at 1000 N Oak Ave, Marshfield, WI 544495703. Office phone: 7153875511.
What is Dr. Corey Massey's NPI?
Dr. Corey Massey's National Provider Identifier (NPI) is 1447245816, issued by NPPES.
What procedures does Dr. Corey Massey 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); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.