Physician

Amy O'Brian Thomas, M.D.

According to 2025 Medicare claims, Amy Thomas, M.D. (NPI: 1134359862) practices allergy/immunology 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 NORTHWESTERN MEDICAL FACULTY FOUNDATION (NPI: 1346235314; TIN: 363097297) and primary practice location at 60026-9998. Thomas is affiliated with the Northwestern Medicine Physician Network ACO (ACO ID: A2620), participating under the MSSP model.

Thomas' data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 31 traditional Medicare patients, billed 716 HCPCS/CPT codes, and received $9,929 in Medicare payments. The top billing code was 99215 (Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more). Part D data shows 153 prescription claims across 30 beneficiaries totaling $63,541 in drug costs, led by Nucala (Mepolizumab). Open Payments data shows 8 records totaling $331. 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 $12,369 to $9,929. Concurrently, Part D prescription costs have moved up and down with repeated peaks and valleys, starting at $22,493 and ending at $63,541. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	29	728	$12,369
2016	52	1,043	$16,005
2017	56	1,425	$23,488
2018	66	2,383	$42,884
2019	63	1,784	$37,183
2020	49	1,003	$27,176
2021	22	453	$8,122
2022	33	767	$10,253
2023	25	483	$9,558
2024	31	716	$9,929

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	53	172	$22,493
2016	63	389	$46,726
2017	69	438	$65,577
2018	60	378	$70,911
2019	63	472	$105,393
2020	59	418	$119,550
2021	40	137	$47,854
2022	24	84	$20,617
2023	25	116	$68,731
2024	30	153	$63,541

DME Billing Trend

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

No connected DME records

* / # = 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
99215	Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	12	18	$141
95004	Test for allergy using allergenic extract	13	523	$3

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Nucala	Mepolizumab	11	364	$48,213
Ipratropium Bromide	Ipratropium Bromide	24	1,453	$438
Azelastine Hcl	Azelastine Hcl	21	1,010	$431
Fluticasone Propionate	Fluticasone Propionate	15	930	$264
Montelukast Sodium	Montelukast Sodium	19	1,530	$161

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.	8	$331	GENZYME 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 Amy O'Brian Thomas, M.D.?

Tedicare shows public-source Medicare data for Amy O'Brian Thomas, M.D. (NPI 1134359862), 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 Amy O'Brian Thomas, M.D. have ACO affiliation data?

Amy O'Brian Thomas, M.D. is shown with ACO affiliation data for Northwestern Medicine Physician Network ACO (MSSP, ACO ID A2620).

What billing organization is linked to Amy O'Brian Thomas, M.D.?

Amy O'Brian Thomas, M.D. is linked to NORTHWESTERN MEDICAL FACULTY FOUNDATION (billing NPI 1346235314) in the available physician profile data.

Does Amy O'Brian Thomas, M.D. have Open Payments data?

Amy O'Brian Thomas, M.D. has 8 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.