Doctor profile · Federal record
Dr. Aaron Farber, D.O.
Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medicine Physician · McHenry, IL
- NPI 1871795443
- Accepts Medicare
- MIPS 91.3 / 100 · 2023
- 20 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
4201 W Medical Center Dr
McHenry, IL 600508409
(815) 338-6600 - Additional location
-
2000 Ogden Ave
Aurora, IL 605047222
(847) 697-8868
Credentials & registration
- NPI registered
- June 2007 — 19 yrs on file
- Profile last updated
- July 21, 2022
- Year of graduation
- 2006 — 20 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State licenses (2)
- Illinois #036121493 · Illinois #125051035
- Medicaid
- IL #0361214934
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1871795443. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
583
Distinct HCPCS
4
Medicare allowed
$94,060
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 402 | 388 | $178 | |
99284 |
Emergency department visit with moderate level of medical decision making | 128 | 127 | $122 | |
99283 |
Emergency department visit with low level of medical decision making | 31 | 30 | $71 | |
99291 |
Critical care, first 30-74 minutes | 22 | 21 | $214 |
In context: peer comparison
Among 16 peers in this city , average services per provider: 107. This provider delivers 5.4× the peer median.Open Payments
Industry payments received
All-time total
$20
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| LEO Pharma Inc. | 1 | $20.26 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
29
Patients
29
Total drug cost
$308
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 17 | 17 | $165 |
| Cephalexin | Generic | 12 | 12 | $143 |
Frequently asked questions
What is Dr. Aaron Farber's medical specialty?
Dr. Aaron Farber practices Emergency Medicine Physician in McHenry, IL.
Where does Dr. Aaron Farber practice?
Dr. Aaron Farber practices at 4201 W Medical Center Dr, McHenry, IL 600508409. Office phone: 8153386600.
What is Dr. Aaron Farber's NPI?
Dr. Aaron Farber's National Provider Identifier (NPI) is 1871795443, issued by NPPES.
Does Dr. Aaron Farber accept Medicare assignment?
Yes. Dr. Aaron Farber accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Aaron Farber 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); Emergency department visit with low level of medical decision making (HCPCS 99283). Source: CMS Medicare Physician & Other Practitioners file.