Doctor profile · Federal record
Dr. Troy Shaffer, D.O.
Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medical Services (Emergency Medicine) Physician · McHenry, IL
- NPI 1285665661
- Accepts Medicare
- 31 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
4201 W Medical Center Dr
McHenry, IL 600508409
(815) 338-6600 - Additional location
-
1045 W Stephenson St
Freeport, IL 610324864
(815) 599-6000
fax (815) 599-7974 - Additional location
-
2400 N Rockton Ave, ER Dept
Rockford, IL 611033655
(815) 971-5000
fax (815) 968-0360 - Additional location
-
8201 E Riverside Blvd
Rockford, IL 611142300
(815) 971-3333
fax (815) 971-0916
Show 1 more location
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- April 3, 2026
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- Illinois #036095672
- Medicaid
- IL #36095672
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1285665661. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
291
Distinct HCPCS
3
Medicare allowed
$40,124
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99284 |
Emergency department visit with moderate level of medical decision making | 129 | 124 | $122 | |
99285 |
Emergency department visit with high level of medical decision making | 120 | 118 | $177 | |
99283 |
Emergency department visit with low level of medical decision making | 42 | 40 | $73 |
In context: peer comparison
Among 16 peers in this city , average services per provider: 107. This provider delivers 2.7× the peer median.Open Payments
Industry payments received
All-time total
$122
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| GENZYME CORPORATION | 1 | $121.88 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
83
Patients
83
Total drug cost
$254
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 22 | 22 | $37 |
| Naproxen | Generic | 19 | 19 | $52 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 16 | 16 | $92 |
| Cyclobenzaprine Hcl | Generic | 13 | 13 | $38 |
| Tramadol Hcl | Generic | 13 | 13 | $35 |
Frequently asked questions
What is Dr. Troy Shaffer's medical specialty?
Dr. Troy Shaffer practices Emergency Medicine Physician in McHenry, IL.
Where does Dr. Troy Shaffer practice?
Dr. Troy Shaffer practices at 4201 W Medical Center Dr, McHenry, IL 600508409. Office phone: 8153386600.
What is Dr. Troy Shaffer's NPI?
Dr. Troy Shaffer's National Provider Identifier (NPI) is 1285665661, issued by NPPES.
Does Dr. Troy Shaffer accept Medicare assignment?
Yes. Dr. Troy Shaffer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Troy Shaffer commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with moderate level of medical decision making (HCPCS 99284); Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with low level of medical decision making (HCPCS 99283). Source: CMS Medicare Physician & Other Practitioners file.