Physician

Long Thang Quan, M.D., PH.D.

According to 2025 Medicare claims, Long Quan, M.D., PH.D. (NPI: 1194784058) practices dermatology in the Columbia, SC market, with the plurality of this provider's patient population coming from Richland, SC. This provider's primary affiliated billing organization is CAROLINA DERMATOLOGY GRP (NPI: 1083693857; TIN: 57-0571969) and primary practice location at 29204-2410.

Quan's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 1,602 traditional Medicare patients, billed 2,997 HCPCS/CPT codes, and received $1,120,356 in Medicare payments. The top billing code was 15260 (Full thickness skin graft to nose, ears, eyelids, or lips, 20.0 sq cm or less). Part D data shows 141 prescription claims across 93 beneficiaries totaling $8,658 in drug costs, led by Fluorouracil (Fluorouracil). Open Payments data shows 21 records totaling $392. 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 started with an early spike, then settled into a lower baseline, moving from $111,515 to $8,658. 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	1,754	6,136	$995,656
2016	1,790	6,477	$1,025,076
2017	1,784	6,041	$1,035,653
2018	1,474	4,883	$945,942
2019	1,361	3,180	$1,005,239
2020	1,107	2,422	$885,609
2021	1,323	2,756	$1,028,600
2022	1,568	2,999	$1,153,765
2023	1,592	3,076	$1,169,591
2024	1,602	2,997	$1,120,356

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	675	1,241	$111,515
2016	572	1,080	$34,610
2017	584	1,079	$61,956
2018	513	891	$29,379
2019	350	567	$18,110
2020	91	149	$5,574
2021	92	153	$9,248
2022	79	105	$11,506
2023	86	142	$11,812
2024	93	141	$8,658

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
15260	Full thickness skin graft to nose, ears, eyelids, or lips, 20.0 sq cm or less	49	52	$718
17311	Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks	1,479	1,887	$442
17313	Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks	94	99	$411
17312	Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks	372	490	$299
13132	Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm	91	93	$173

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Fluorouracil	Fluorouracil	59	2,098	$5,022
Imiquimod	Imiquimod	20	647	$382
Doxycycline Hyclate	Doxycycline Hyclate	17	255	$153

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.	21	$392	Lilly USA, LLC
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 Long Thang Quan, M.D., PH.D.?

Tedicare shows public-source Medicare data for Long Thang Quan, M.D., PH.D. (NPI 1194784058), 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 Long Thang Quan, M.D., PH.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 Long Thang Quan, M.D., PH.D.?

Long Thang Quan, M.D., PH.D. is linked to CAROLINA DERMATOLOGY GRP (billing NPI 1083693857) in the available physician profile data.

Does Long Thang Quan, M.D., PH.D. have Open Payments data?

Long Thang Quan, M.D., PH.D. has 21 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.