Physician

Aaron Chen, D.O.

According to 2025 Medicare claims, Aaron Chen, D.O. (NPI: 1780043703) practices dermatology in the San Rafael, CA market, with the plurality of this provider's patient population coming from Marin, CA. This provider's primary affiliated billing organization is CSI MEDICAL GROUP (NPI: 1871909804; TIN: 471108040) and primary practice location at 94904-1439.

Chen's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 68 traditional Medicare patients, billed 246 HCPCS/CPT codes, and received $15,156 in Medicare payments. The top billing code was 17110 (Destruction of skin growth, 1-14 growths). Part D data shows 126 prescription claims across 70 beneficiaries totaling $11,468 in drug costs, led by Dutasteride (Dutasteride). Open Payments data shows 98 records totaling $3,126. 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 has fewer than 5 years of reported Medicare Part B carrier billing data, so a reliable trend cannot be assigned. Concurrently, Part D prescription costs have moved sharply higher in recent years, from $455 to $11,468. 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	N/R	N/R	N/R
2016	N/R	N/R	N/R
2017	N/R	N/R	N/R
2018	N/R	N/R	N/R
2019	46	70	$3,760
2020	N/R	N/R	N/R
2021	N/R	N/R	N/R
2022	N/R	N/R	N/R
2023	N/R	N/R	N/R
2024	68	246	$15,156

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	N/R	N/R
2016	N/R	N/R	N/R
2017	N/R	45	$455
2018	15	21	$888
2019	149	247	$11,297
2020	155	428	$39,309
2021	N/R	18	$362
2022	N/R	N/R	N/R
2023	N/R	N/R	N/R
2024	70	126	$11,468

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
17110	Destruction of skin growth, 1-14 growths	12	16	$105
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	43	67	$82
17000	Destruction of precancer skin growth, 1 growth	17	23	$48
17003	Destruction of precancer skin growth, 2-14 growths	16	79	$7

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Dutasteride	Dutasteride	29	2,282	$955
Valacyclovir	Valacyclovir Hcl	12	342	$175

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.	98	$3,126	ABBVIE 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 Aaron Chen, D.O.?

Tedicare shows public-source Medicare data for Aaron Chen, D.O. (NPI 1780043703), 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 Aaron Chen, D.O. have ACO affiliation data?

No ACO affiliation record is shown in the available Tedicare data for this profile.

What billing organization is linked to Aaron Chen, D.O.?

Aaron Chen, D.O. is linked to CSI MEDICAL GROUP (billing NPI 1871909804) in the available physician profile data.

Does Aaron Chen, D.O. have Open Payments data?

Aaron Chen, D.O. has 98 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.