Physician

Thomas Maclennan, M.D.

According to 2025 Medicare claims, Thomas Maclennan, M.D. (NPI: 1033169891) practices diagnostic radiology in the Visalia, CA market, with the plurality of this provider's patient population coming from Tulare, CA. This provider's primary affiliated billing organization is T.W. MACLENNAN, M.D., A MEDICAL CORP (NPI: 1699711564; TIN: 043669114) and primary practice location at 93257-3320.

Maclennan's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 4,706 traditional Medicare patients, billed 19,009 HCPCS/CPT codes, and received $508,764 in Medicare payments. The top billing code was 77067 (Screening mammography). Part D data shows 28 prescription claims totaling $325 in drug costs, led by Celecoxib (Celecoxib). No Open Payments records. 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, Part D prescription costs have declined steadily, from $1,634 to $325. 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	5,764	22,467	$562,854
2016	5,971	25,065	$619,803
2017	6,194	24,183	$656,931
2018	6,006	22,951	$629,406
2019	5,792	22,056	$657,907
2020	4,804	17,318	$524,596
2021	4,628	17,034	$527,401
2022	4,733	17,826	$540,752
2023	4,655	17,666	$499,867
2024	4,706	19,009	$508,764

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	N/R	59	$1,634
2016	N/R	58	$1,320
2017	N/R	59	$763
2018	N/R	66	$797
2019	N/R	64	$3,236
2020	N/R	50	$795
2021	N/R	52	$762
2022	N/R	43	$871
2023	N/R	30	$643
2024	N/R	28	$325

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
77067	Screening mammography	889	889	$36
77063	Screening 3d breast mammography	888	888	$28
70450	Ct scan head or brain without contrast	987	1,307	$28
71046	X-ray of chest, 2 views	760	871	$7
71045	X-ray of chest, 1 view	1,085	2,286	$6

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Celecoxib	Celecoxib	12	360	$134

Top 5 DME services in 2024

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

Open Payments Summary

No connected Open Payments records were found for this physician in General Payments, Research Payments, or Ownership / Investment Interests.

Explore More Providers

FAQ

What Medicare data is available for Thomas Maclennan, M.D.?

Tedicare shows public-source Medicare data for Thomas Maclennan, M.D. (NPI 1033169891), 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 Thomas Maclennan, 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 Thomas Maclennan, M.D.?

Thomas Maclennan, M.D. is linked to T.W. MACLENNAN, M.D., A MEDICAL CORP (billing NPI 1699711564) in the available physician profile data.

Does Thomas Maclennan, M.D. have Open Payments data?

No connected Open Payments records are shown for this physician in the available General Payments, Research Payments, or Ownership / Investment Interests 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.