Physician

Syed Aslam Zahir, M.D.

According to 2025 Medicare claims, Syed Zahir, M.D. (NPI: 1538156732) practices hematology/oncology in the Chicago-Naperville-Schaumburg, IL market, with the plurality of this provider's patient population coming from Mc Henry, IL. This provider's primary affiliated billing organization is ILLINOIS CANCER SPECIALISTS (NPI: 1164483913; TIN: 363980044) and primary practice location at 60014-7978.

Zahir's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 653 traditional Medicare patients, billed 363,418 HCPCS/CPT codes, and received $6,257,134 in Medicare payments. The top billing code was 99214 (Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more). Part D data shows 2,536 prescription claims across 345 beneficiaries totaling $4,531,944 in drug costs, led by Jakafi (Ruxolitinib Phosphate). DME data shows 66 claims. Open Payments data shows 76 records totaling $1,573. 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 risen steadily, from $2,794,880 to $6,257,134. Similarly, Part D prescription costs have risen steadily, from $1,416,465 to $4,531,944. In contrast, DME billing represents a smaller volume and moved sharply higher in recent years, from $3,265 to $15,176.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	821	216,215	$2,794,880
2016	852	253,971	$3,866,695
2017	874	288,831	$4,340,692
2018	946	340,217	$4,739,100
2019	991	364,012	$5,491,980
2020	842	344,777	$5,371,473
2021	783	366,380	$5,961,959
2022	727	376,988	$5,566,102
2023	655	376,778	$5,037,721
2024	653	363,418	$6,257,134

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	280	2,296	$1,416,465
2016	303	2,632	$2,148,573
2017	323	2,533	$3,687,585
2018	348	2,599	$4,940,064
2019	357	2,589	$5,514,534
2020	315	2,322	$6,174,886
2021	327	2,350	$5,574,477
2022	333	2,377	$5,571,176
2023	324	2,228	$4,811,558
2024	345	2,536	$4,531,944

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	N/R	116	$50,630
2016	N/R	99	$21,732
2017	N/R	140	$27,701
2018	N/R	119	$14,672
2019	N/R	66	$2,175
2020	N/R	15	$367
2021	N/R	98	$14,245
2022	N/R	47	$12,493
2023	N/R	48	$13,449
2024	N/R	66	$15,017

* / # = 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
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	402	2,185	$93
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	304	1,401	$65
99232	Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	224	560	$61
36415	Insertion of needle into vein for collection of blood sample	419	2,915	$9
85025	Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	434	3,213	$8

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Jakafi	Ruxolitinib Phosphate	134	4,020	$2,220,670
Pomalyst	Pomalidomide	26	728	$615,259
Xtandi	Enzalutamide	28	840	$390,198
Calquence	Acalabrutinib Maleate	22	660	$321,062
Venclexta	Venetoclax	18	530	$163,101

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
E0466	Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell)	Y	N/R	12	$12,065
E1390	Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate	Y	N/R	27	$2,006
E1392	Portable oxygen concentrator, rental	Y	N/R	27	$946

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	76	$1,573	Novartis Pharmaceuticals Corporation
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 Syed Aslam Zahir, M.D.?

Tedicare shows public-source Medicare data for Syed Aslam Zahir, M.D. (NPI 1538156732), 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 Syed Aslam Zahir, M.D. have ACO affiliation data?

No ACO affiliation record is shown in the available Tedicare data for this profile.

What billing organization is linked to Syed Aslam Zahir, M.D.?

Syed Aslam Zahir, M.D. is linked to ILLINOIS CANCER SPECIALISTS (billing NPI 1164483913) in the available physician profile data.

Does Syed Aslam Zahir, M.D. have Open Payments data?

Syed Aslam Zahir, M.D. has 76 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.