Doctor profile · Federal record
Dr. Ghassan Zalzaleh, MD
Hematology & Oncology Physician (CMS: Internal Medicine) · Oak Lawn, IL
- NPI 1992704035
- Accepts Medicare
- 39 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4400 W 95Th St, Suite 311
Oak Lawn, IL 604532654
(708) 424-9710
fax (708) 424-4331 - Mailing address
-
62647 Collection Center Dr
Chicago, IL 606930626
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- July 10, 2015
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- Illinois #036089713
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1992704035. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
212,579
Distinct HCPCS
10
Medicare allowed
$3,892,370
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J9271 |
Injection, pembrolizumab, 1 mg | 39,200 | 40 | $54 | |
J1439 |
Injection, ferric carboxymaltose, 1 mg | 30,000 | 29 | $1 | |
J1453 |
Injection, fosaprepitant, 1 mg | 23,850 | 53 | $0 | |
Q5110 |
Injection, filgrastim-aafi, biosimilar, (nivestym), 1 microgram | 17,940 | 15 | $0 | |
J0881 |
Injection, darbepoetin alfa, 1 microgram (non-esrd use) | 16,200 | 11 | $3 | |
J9263 |
Injection, oxaliplatin, 0.5 mg | 15,600 | 15 | $0 | |
Q5101 |
Injection, filgrastim-sndz, biosimilar, (zarxio), 1 microgram | 12,780 | 11 | $0 | |
J9264 |
Injection, paclitaxel protein-bound particles, 1 mg | 10,500 | 13 | $13 | |
J0897 |
Injection, denosumab, 1 mg | 9,420 | 29 | $23 | |
J9267 |
Injection, paclitaxel, 1 mg | 7,020 | 15 | $0 |
In context: peer comparison
Among 4 peers in Oak Lawn Hematology & Oncology Physician, average services per provider: 2,608. This provider delivers 82× the peer median.Open Payments
Industry payments received
All-time total
$16,185
Transactions
135
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Emd Serono, INC. | 7 | $11,001.16 | |
| Karyopharm Therapeutics INC. | 2 | $1,100.00 | |
| Pfizer INC. | 18 | $301.23 | |
| Janssen Biotech, INC. | 8 | $280.08 | |
| Alexion Pharmaceuticals, INC. | 5 | $257.69 | |
| Novartis Pharmaceuticals Corporation | 16 | $241.42 | |
| AstraZeneca Pharmaceuticals Lp | 11 | $235.81 | |
| Takeda Pharmaceuticals U.S.A., INC. | 8 | $213.99 | |
| Regeneron Healthcare Solutions, INC. | 15 | $205.90 | |
| Merck Sharp & Dohme LLC | 10 | $184.85 | |
| Astellas Pharma US INC | 7 | $164.37 | |
| Eisai INC. | 7 | $161.76 | |
| Lilly USA, LLC | 7 | $157.79 | |
| Genentech USA, INC. | 7 | $133.75 | |
| Abbvie INC. | 7 | $126.14 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
331
Patients
69
Total drug cost
$728,117
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Eliquis (Apixaban) | Brand | 51 | 14 | $43,193 |
| Prednisone | Generic | 45 | 19 | $363 |
| Gabapentin | Generic | 30 | 0 | $315 |
| Ondansetron Hcl | Generic | 25 | 0 | $273 |
| Anastrozole | Generic | 22 | 0 | $381 |
| Bicalutamide | Generic | 21 | 11 | $813 |
| Revlimid (Lenalidomide) | Brand | 20 | 0 | $358,493 |
| Hydroxyurea | Generic | 19 | 0 | $1,067 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 18 | 14 | $285 |
| Levothyroxine Sodium | Generic | 18 | 0 | $179 |
Hospital affiliations
Frequently asked questions
What is Dr. Ghassan Zalzaleh's medical specialty?
Dr. Ghassan Zalzaleh practices Hematology & Oncology Physician in Oak Lawn, IL.
Where does Dr. Ghassan Zalzaleh practice?
Dr. Ghassan Zalzaleh practices at 4400 W 95Th St, Oak Lawn, IL 604532654. Office phone: 7084249710.
What is Dr. Ghassan Zalzaleh's NPI?
Dr. Ghassan Zalzaleh's National Provider Identifier (NPI) is 1992704035, issued by NPPES.
Does Dr. Ghassan Zalzaleh accept Medicare assignment?
Yes. Dr. Ghassan Zalzaleh accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ghassan Zalzaleh commonly perform?
Top Medicare-reported procedures in 2023: Injection, pembrolizumab, 1 mg (HCPCS J9271); Injection, ferric carboxymaltose, 1 mg (HCPCS J1439); Injection, fosaprepitant, 1 mg (HCPCS J1453). Source: CMS Medicare Physician & Other Practitioners file.