Physician

Aaron Isamu Karlen, MD

Hand surgery Salem, OR Salem Health

According to 2025 Medicare claims, Aaron Isamu Karlen, MD (NPI: 1104184415) practices hand surgery in the Salem, OR market, with the plurality of this provider's patient population coming from Marion, OR. This provider's primary affiliated billing organization is Salem Health (NPI: 1265431829; TIN: ).

Karlen's data goes back to 2012 and runs through 2026. For example, in 2023, this provider had 209 traditional Medicare patients, billed 764 HCPCS/CPT codes, and received $78,011 in Medicare payments. Part D data shows 297 prescription claims across 158 beneficiaries totaling $3,061 in drug costs, and DME data shows Suppressed by CMS claims. Open Payments data shows 2 records totaling $77.

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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	Not reported for this year	Not reported for this year	Not reported for this year
2015	Not reported for this year	Not reported for this year	Not reported for this year
2016	Not reported for this year	Not reported for this year	Not reported for this year
2017	Not reported for this year	Not reported for this year	Not reported for this year
2018	53	206	$16,763
2019	184	1,183	$80,308
2020	177	1,212	$80,245
2021	183	1,144	$84,320
2022	223	1,029	$89,136
2023	209	764	$78,011

10-Year Trend of Part D records

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

Year	Patients	Claims	Drug Cost
2014	Not reported for this year	Not reported for this year	Not reported for this year
2015	Not reported for this year	Not reported for this year	Not reported for this year
2016	Not reported for this year	Not reported for this year	Not reported for this year
2017	Not reported for this year	Not reported for this year	Not reported for this year
2018	22	29	$349
2019	90	148	$1,765
2020	106	189	$3,264
2021	162	251	$3,845
2022	182	302	$3,735
2023	158	297	$3,061

10-Year Trend of DME records

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

Year	Patients	Claims	Medicare Payment
2014	Not reported for this year	Not reported for this year	Not reported for this year
2015	Not reported for this year	Not reported for this year	Not reported for this year
2016	Not reported for this year	Not reported for this year	Not reported for this year
2017	Not reported for this year	Not reported for this year	Not reported for this year
2018	Not reported for this year	Not reported for this year	Not reported for this year
2019	48	56	$9,578
2020	45	0	$0
2021	35	0	$0
2022	38	0	$0
2023	37	39	$11,047

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.

DME	Patients	Claims	Services	Medicare Payment
All DME supplier activity	37	39	44	$11,047
Prosthetics, orthotics, and supplies	36	38	43	$7,676

DME category summary is shown when item-level DME rows are not connected.

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

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