Physician

Gary B Brennan, M.D.

According to 2025 Medicare claims, Gary Brennan, M.D. (NPI: 1194818484) practices diagnostic radiology in the Lima, OH market, with the plurality of this provider's patient population coming from Allen, OH. This provider's primary affiliated billing organization is LIMA MEMORIAL PROFESSIONAL CORPORATION (NPI: 1457474900; TIN: 341935236) and primary practice location at 45804-2800.

Brennan's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 3,432 traditional Medicare patients, billed 8,444 HCPCS/CPT codes, and received $247,502 in Medicare payments. The top billing code was 74177 (Ct scan of abdomen and pelvis with contrast). Open Payments data shows 2 records totaling $38. 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 changed little. Concurrently, this provider has fewer than 5 years of reported Part D prescription costs data, so a reliable trend cannot be assigned. 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	3,202	7,628	$214,869
2016	3,304	7,884	$223,615
2017	3,697	9,147	$268,581
2018	3,559	7,660	$222,439
2019	4,792	10,574	$298,801
2020	3,832	8,941	$262,928
2021	4,142	9,019	$263,258
2022	3,712	8,223	$248,166
2023	3,184	7,370	$228,708
2024	3,432	8,444	$247,502

Part D Events Trend

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

No connected Part D records

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
74177	Ct scan of abdomen and pelvis with contrast	274	309	$60
70450	Ct scan head or brain without contrast	336	367	$28
93880	Ultrasound of both sides of head and neck blood flow	250	253	$26
71046	X-ray of chest, 2 views	538	621	$7
71045	X-ray of chest, 1 view	821	1,353	$6

Top 5 Part D drugs in 2024

By total drug costs.

No connected Part D drug-level records for 2024.

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	$38	Inari Medical, 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 Gary B. Brennan, M.D.?

Tedicare shows public-source Medicare data for Gary B. Brennan, M.D. (NPI 1194818484), 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 Gary B. Brennan, 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 Gary B. Brennan, M.D.?

Gary B. Brennan, M.D. is linked to LIMA MEMORIAL PROFESSIONAL CORPORATION (billing NPI 1457474900) in the available physician profile data.

Does Gary B. Brennan, M.D. have Open Payments data?

Gary B. Brennan, 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.