Doctor profile · Federal record
Dr. Farzan Mahmood, M.D
Rheumatology Physician (CMS: Rheumatology) · Internal Medicine Physician · Rheumatology Physician · Naperville, IL
- NPI 1841484961
- Accepts Medicare
- 26 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1508 Sequoia RD
Naperville, IL 605406389
(630) 585-7100 - Additional location
-
818 Forest Ln
Waterford, WI 531854585
(262) 514-3700 - Mailing address
-
29373 Network Pl
Chicago, IL 606731293
Credentials & registration
- NPI registered
- August 2007 — 19 yrs on file
- Profile last updated
- May 28, 2024
- Year of graduation
- 2000 — 26 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State licenses (3)
- Illinois #036-119936 · Illinois #125049227 · Wisconsin #56163
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1841484961. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
5,583
Distinct HCPCS
10
Medicare allowed
$183,710
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J0897 |
Injection, denosumab, 1 mg | 3,780 | 41 | $23 | |
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 705 | 103 | $1 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 429 | 292 | $121 | |
96372 |
Injection of drug or substance under skin or into muscle | 150 | 49 | $14 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 143 | 143 | $158 | |
20610 |
Aspiration and/or injection of fluid from large joint | 109 | 67 | $68 | |
20600 |
Aspiration and/or injection of fluid from small joint | 63 | 37 | $48 | |
J1040 |
Injection, methylprednisolone acetate, 80 mg | 49 | 32 | $12 | |
G0008 |
Administration of influenza virus vaccine | 43 | 43 | $29 | |
90662 |
Influenza vaccine split virus, preservative free | 37 | 37 | $72 |
In context: peer comparison
Among 6 peers in Naperville Rheumatology Physician, average services per provider: 1,194. This provider delivers 4.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,620
Patients
785
Total drug cost
$66,573
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Alendronate Sodium | Generic | 494 | 171 | $6,417 |
| Prednisone | Generic | 447 | 138 | $3,706 |
| Methotrexate (Methotrexate Sodium) | Brand | 327 | 89 | $14,533 |
| Allopurinol | Generic | 261 | 64 | $5,154 |
| Duloxetine Hcl | Generic | 217 | 49 | $6,097 |
| Meloxicam | Generic | 173 | 64 | $982 |
| Celecoxib | Generic | 128 | 48 | $3,659 |
| Gabapentin | Generic | 126 | 27 | $2,172 |
| Hydroxychloroquine Sulfate | Generic | 81 | 25 | $6,657 |
| Folic Acid | Generic | 72 | 24 | $436 |
Hospital affiliations
Frequently asked questions
What is Dr. Farzan Mahmood's medical specialty?
Dr. Farzan Mahmood practices Rheumatology Physician in Naperville, IL.
Where does Dr. Farzan Mahmood practice?
Dr. Farzan Mahmood practices at 1508 Sequoia RD, Naperville, IL 605406389. Office phone: 6305857100.
What is Dr. Farzan Mahmood's NPI?
Dr. Farzan Mahmood's National Provider Identifier (NPI) is 1841484961, issued by NPPES.
Does Dr. Farzan Mahmood accept Medicare assignment?
Yes. Dr. Farzan Mahmood accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Farzan Mahmood commonly perform?
Top Medicare-reported procedures in 2023: Injection, denosumab, 1 mg (HCPCS J0897); Injection, triamcinolone acetonide, not otherwise specified, 10 mg (HCPCS J3301); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.