Physician

Ghassan Zalzaleh, MD

According to 2025 Medicare claims, Ghassan Zalzaleh, MD (NPI: 1992704035) practices internal medicine in the Chicago-Naperville-Schaumburg, IL market, with the plurality of this provider's patient population coming from Cook, IL. This provider's primary affiliated billing organization is AFFILIATED ONCOLOGISTS, LLC (NPI: 1225314362; TIN: 274182621) and primary practice location at 60415-2717. Zalzaleh is affiliated with the Advocate Physician Partners Accountable Care, Inc. (ACO ID: A1033) and AMITA Health Accountable Care Organization, LLC (ACO ID: A1501), participating under the MSSP model.

Zalzaleh's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 679 traditional Medicare patients, billed 192,003 HCPCS/CPT codes, and received $3,814,822 in Medicare payments. The top billing code was 96413 (Administration of chemotherapy into vein, 1 hour or less). Part D data shows 564 prescription claims across 173 beneficiaries totaling $1,298,190 in drug costs, led by Revlimid (Lenalidomide). DME data shows 72 claims. Open Payments data shows 199 records totaling $16,185. You can download detailed data with all billing codes (2015-2024). For more recent data, please contact us.

Over the past 10 years, this provider's Medicare Part B carrier billing has moved from a lower plateau to a higher plateau, from $1,341,736 to $3,814,822. Concurrently, Part D prescription costs have moved up and down with repeated peaks and valleys, starting at $1,161,441 and ending at $1,298,190. In contrast, DME billing represents a smaller volume and started with an early spike, then settled into a lower baseline, moving from $5,047 to $1,881.

Part B Carrier Billing Trend

Medicare payment trend, with N of patients and claim lines in the table.

Year	Patients	Clm Lines	Payment
2015	534	103,866	$1,341,736
2016	508	146,982	$2,144,328
2017	622	153,628	$2,150,357
2018	766	147,599	$1,722,553
2019	744	184,373	$2,751,044
2020	809	221,283	$3,341,366
2021	825	274,285	$4,195,672
2022	787	316,841	$4,738,279
2023	711	277,073	$4,847,507
2024	679	192,003	$3,814,822

Part D Events Trend

Drug cost trend, with N of patients and prescription claims in the table.

Year	Patients	Claims	Drug Cost
2015	152	690	$1,161,441
2016	155	798	$1,336,944
2017	160	816	$1,692,525
2018	188	1,069	$2,466,795
2019	186	1,119	$2,069,226
2020	220	1,771	$2,777,993
2021	212	1,156	$2,378,499
2022	182	761	$1,747,297
2023	153	574	$1,808,080
2024	173	564	$1,298,190

DME Billing Trend

Medicare payment trend, with N of patients and DME claim records in the table.

Year	Patients	Claims	Payment
2015	23	146	$54,842
2016	28	204	$46,183
2017	24	176	$30,735
2018	N/R	110	$11,721
2019	23	105	$7,991
2020	23	137	$11,863
2021	27	139	$6,720
2022	N/R	86	$2,093
2023	47	131	$49,282
2024	N/R	72	$1,418

* / # = suppressed by CMS; 0 = reported zero; N/R = not reported or blank.

Top 5 Part B carrier billing codes in 2024

By total payments.

Code	Description	Patients	Clm Lines	Total Payment
96413	Administration of chemotherapy into vein, 1 hour or less	159	493	$103
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	303	723	$97
96367	Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less	113	351	$23
G2211	Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	162	294	$13
96372	Injection of drug or substance under skin or into muscle	107	284	$11

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Revlimid	Lenalidomide	28	777	$495,090
Imbruvica	Ibrutinib	11	308	$168,583
Imatinib Mesylate	Imatinib Mesylate	23	690	$75,078
Eliquis	Apixaban	64	2,490	$47,263
Abiraterone Acetate	Abiraterone Acetate	20	596	$13,852

Top 5 DME services in 2024

By Total Medicare Payment Amount.

HCPCS Code	HCPCS Description	Supplier Rental Indicator	Total Supplier Beneficiaries	Total Supplier Claims	Total Medicare Payment Amount
J8521	Capecitabine, oral, 500 mg	N	N/R	23	$582
J8999	Prescription drug, oral, chemotherapeutic, nos	N	N/R	13	$309
Q0511	Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period	N	N/R	18	$301
Q0512	Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period	N	N/R	18	$226

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	199	$16,185	EMD Serono, Inc.
Research Payments	Reported research-related payment or transfer-of-value amount.	0	$0	N/R
Ownership / Investment Interests	Reported value of ownership or investment interests.	0	$0	N/R

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FAQ

What Medicare data is available for Ghassan Zalzaleh, MD?

Tedicare shows public-source Medicare data for Ghassan Zalzaleh, MD (NPI 1992704035), including provider identity, specialty, market context, Medicare Part B activity, Part D prescribing, DME records, Open Payments where available, billing organization details, and ACO affiliation signals where available. Profile data covers 2015-2024, with current attribution based on 2025 claims where available.

Does Ghassan Zalzaleh, MD have ACO affiliation data?

Ghassan Zalzaleh, MD is shown with ACO affiliation data for Advocate Physician Partners Accountable Care, Inc. (MSSP, ACO ID A1033) and AMITA Health Accountable Care Organization, LLC (MSSP, ACO ID A1501).

What billing organization is linked to Ghassan Zalzaleh, MD?

Ghassan Zalzaleh, MD is linked to AFFILIATED ONCOLOGISTS, LLC (billing NPI 1225314362) in the available physician profile data.

Does Ghassan Zalzaleh, MD have Open Payments data?

Ghassan Zalzaleh, MD has 199 connected Open Payments records in the available 2024 summary data.

Can I download physician-level Medicare data from Tedicare?

Yes. Tedicare provides sample physician export data and paid custom physician data exports for research, planning, outreach, and market analysis. Exports can include physician profile fields, market and specialty context, billing organization details, ACO affiliation signals where available, and Medicare utilization data.