Physician

Aaron Greenspan, M.D.

According to 2025 Medicare claims, Aaron Greenspan, M.D. (NPI: 1033297023) practices family practice 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 THOREK MEMORIAL HOSPITAL (NPI: 1982643961; TIN: 366000085) and primary practice location at 60613-3098.

Greenspan's data goes back to 2015 and runs through 2024. For example, in 2023, this provider had 92 traditional Medicare patients, billed 221 HCPCS/CPT codes, and received $14,890 in Medicare payments. 2024 Part D data shows 166 prescription claims across 34 beneficiaries totaling $8,807 in drug costs, led by Rosuvastatin Calcium (Rosuvastatin Calcium). DME data shows 28 claims. Open Payments data shows 2 records totaling $43. 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 fallen sharply in recent years, from $66,266 to $14,890. Similarly, Part D prescription costs have fallen sharply in recent years, from $302,623 to $8,807. In contrast, DME billing represents a smaller volume and moved up and down with repeated peaks and valleys, starting at $2,186 and ending at $1,230.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	171	1,029	$66,266
2016	171	770	$47,804
2017	173	812	$45,162
2018	185	1,027	$55,627
2019	200	1,092	$67,063
2020	164	877	$67,842
2021	134	584	$41,858
2022	102	489	$30,583
2023	92	221	$14,890
2024	N/R	N/R	N/R

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	181	4,580	$302,623
2016	172	4,284	$244,798
2017	161	3,807	$213,963
2018	161	3,101	$222,368
2019	140	2,401	$172,752
2020	141	2,214	$173,440
2021	133	2,315	$217,580
2022	121	2,099	$193,834
2023	68	530	$63,224
2024	34	166	$8,807

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	32	79	$842
2016	61	150	$4,062
2017	16	202	$4,857
2018	N/R	113	$2,604
2019	N/R	118	$1,749
2020	N/R	46	$1,333
2021	N/R	62	$2,146
2022	N/R	76	$3,965
2023	N/R	28	$266
2024	N/R	N/R	N/R

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

Top 5 Part B carrier billing codes in 2024

By total payments.

No connected Part B code-level records for 2024.

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Rosuvastatin Calcium	Rosuvastatin Calcium	12	780	$223
Citalopram Hbr	Citalopram Hydrobromide	17	241	$154
Levothyroxine Sodium	Levothyroxine Sodium	11	390	$154

Top 5 DME services in 2024

No connected or detailed DME service-level records for 2024.

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	2	$43	Regeneron Healthcare Solutions, 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 Aaron Greenspan, M.D.?

Tedicare shows public-source Medicare data for Aaron Greenspan, M.D. (NPI 1033297023), 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 Aaron Greenspan, 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 Aaron Greenspan, M.D.?

Aaron Greenspan, M.D. is linked to THOREK MEMORIAL HOSPITAL (billing NPI 1982643961) in the available physician profile data.

Does Aaron Greenspan, M.D. have Open Payments data?

Aaron Greenspan, M.D. has 2 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.