Doctor profile · Federal record
Dr. Christopher Nielsen, M.D.
Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medicine Physician · Rockford, IL
- NPI 1043280811
- Accepts Medicare
- 27 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5666 East State Street
Rockford, IL 611082425
(815) 226-2000
fax (608) 826-2710
Credentials & registration
- NPI registered
- January 2006 — 20 yrs on file
- Profile last updated
- February 10, 2011
- Year of graduation
- 1999 — 27 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State licenses (2)
- Illinois #036-126617 · Wisconsin #44558
- Medicaid
- WI #34253900
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1043280811. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
578
Distinct HCPCS
5
Medicare allowed
$64,972
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 230 | 224 | $162 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 150 | 137 | $8 | |
99284 |
Emergency department visit with moderate level of medical decision making | 121 | 113 | $112 | |
99291 |
Critical care, first 30-74 minutes | 59 | 58 | $198 | |
99283 |
Emergency department visit with low level of medical decision making | 18 | 18 | $66 |
In context: peer comparison
Among 18 peers in this city , average services per provider: 111. This provider delivers 5.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
107
Patients
104
Total drug cost
$1,503
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cefdinir | Generic | 36 | 35 | $687 |
| Doxycycline Hyclate | Generic | 22 | 21 | $216 |
| Naproxen | Generic | 14 | 14 | $57 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 13 | 12 | $438 |
| Cephalexin | Generic | 11 | 11 | $86 |
| Prednisone | Generic | 11 | 11 | $20 |
Hospital affiliations
Frequently asked questions
What is Dr. Christopher Nielsen's medical specialty?
Dr. Christopher Nielsen practices Emergency Medicine Physician in Rockford, IL.
Where does Dr. Christopher Nielsen practice?
Dr. Christopher Nielsen practices at 5666 East State Street, Rockford, IL 611082425. Office phone: 8152262000.
What is Dr. Christopher Nielsen's NPI?
Dr. Christopher Nielsen's National Provider Identifier (NPI) is 1043280811, issued by NPPES.
Does Dr. Christopher Nielsen accept Medicare assignment?
Yes. Dr. Christopher Nielsen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Christopher Nielsen commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.