Physician

Aaron Lessen, MD

Emergency medicine Denver-Aurora-Centennial, CO San Juan Regional Medical Center, Inc.

According to 2025 Medicare claims, Aaron Lessen, MD (NPI: 1457535346) practices emergency medicine in the Denver-Aurora-Centennial, CO market, with the plurality of this provider's patient population coming from Denver, CO. This provider's primary affiliated billing organization is San Juan Regional Medical Center, Inc. (NPI: 1134590318; TIN: ).

Lessen's data goes back to 2012 and runs through 2026. For example, in 2023, this provider had 417 traditional Medicare patients, billed 748 HCPCS/CPT codes, and received $61,427 in Medicare payments. Part D data shows 245 prescription claims across 155 beneficiaries totaling $4,984 in drug costs. Open Payments data shows 1 records totaling $111.

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10-Year Trend of Part B billing

Medicare payment trend, with patients and services in the table.

Year	Patients	Services	Medicare Payment
2014	632	1,012	$80,090
2015	604	977	$80,722
2016	546	908	$73,134
2017	549	917	$74,288
2018	480	766	$61,189
2019	460	676	$57,819
2020	358	421	$49,967
2021	390	644	$54,614
2022	424	759	$61,296
2023	417	748	$61,427

10-Year Trend of Part D records

Prescription claims trend, with patients and drug cost in the table.

Year	Patients	Claims	Drug Cost
2014	179	267	$3,803
2015	174	238	$2,238
2016	127	173	$1,935
2017	111	160	$3,680
2018	109	167	$2,155
2019	103	149	$4,191
2020	86	144	$5,649
2021	128	183	$3,673
2022	136	181	$3,688
2023	155	245	$4,984

10-Year Trend of DME records

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

No connected records

Top 5 Part B billing codes in 2023

By N of patients.

No connected Part B code-level records for 2023.

Top 5 Part D drugs in 2023

By N of patients.

No connected Part D drug-level records for 2023.

Top 5 DME in 2023

By N of patients.

No connected DME records for 2023.

Physician Data Export

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Part B billing, Part D prescribing, DME records, yearly summaries, source JSON, and source notes.

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