Doctor profile · Federal record
Dr. Gary Fahrenbach, M.D.
Rheumatology Physician (CMS: Rheumatology) · Niles, IL
- NPI 1043303803
- Accepts Medicare
- 49 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
7411 N Milwaukee Ave
Niles, IL 607143707
(773) 763-1818
fax (773) 763-9381
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- August 26, 2024
- Year of graduation
- 1977 — 49 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State license (1)
- Illinois #03657385
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1043303803. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
15,595
Distinct HCPCS
5
Medicare allowed
$260,587
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J1602 |
Injection, golimumab, 1 mg, for intravenous use | 14,950 | 19 | $13 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 445 | 139 | $95 | |
96365 |
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | 134 | 25 | $67 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 55 | 55 | $175 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 11 | 11 | $182 |
In context: peer comparison
Among 1 peers in Niles Rheumatology Physician, average services per provider: 3,119. This provider delivers 5.0× the peer median.Open Payments
Industry payments received
All-time total
$93
Transactions
4
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Regeneron Healthcare Solutions, INC. | 1 | $36.26 | |
| Abbvie INC. | 1 | $29.44 | |
| AstraZeneca Pharmaceuticals Lp | 2 | $27.67 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,444
Patients
281
Total drug cost
$728,353
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 405 | 103 | $3,131 |
| Methotrexate (Methotrexate Sodium) | Brand | 227 | 50 | $9,664 |
| Leflunomide | Generic | 159 | 41 | $10,223 |
| Tramadol Hcl | Generic | 104 | 26 | $1,322 |
| Hydroxychloroquine Sulfate | Generic | 84 | 18 | $4,011 |
| Acetaminophen-Codeine (Acetaminophen With Codeine) | Brand | 76 | 0 | $1,656 |
| Azathioprine | Generic | 73 | 20 | $4,746 |
| Enbrel (Etanercept) | Brand | 52 | 0 | $393,615 |
| Allopurinol | Generic | 44 | 0 | $253 |
| Diclofenac Sodium | Generic | 42 | 12 | $679 |
Hospital affiliations
Frequently asked questions
What is Dr. Gary Fahrenbach's medical specialty?
Dr. Gary Fahrenbach practices Rheumatology Physician in Niles, IL.
Where does Dr. Gary Fahrenbach practice?
Dr. Gary Fahrenbach practices at 7411 N Milwaukee Ave, Niles, IL 607143707. Office phone: 7737631818.
What is Dr. Gary Fahrenbach's NPI?
Dr. Gary Fahrenbach's National Provider Identifier (NPI) is 1043303803, issued by NPPES.
Does Dr. Gary Fahrenbach accept Medicare assignment?
Yes. Dr. Gary Fahrenbach accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gary Fahrenbach commonly perform?
Top Medicare-reported procedures in 2023: Injection, golimumab, 1 mg, for intravenous use (HCPCS J1602); Established patient office or other outpatient visit (HCPCS 99213); Infusion into a vein for therapy, prevention, or diagnosis (HCPCS 96365). Source: CMS Medicare Physician & Other Practitioners file.