Physician

Tony Li-Wei Chang, MD

According to 2025 Medicare claims, Tony Chang, MD (NPI: 1871784678) practices family practice in the Redding, CA market, with the plurality of this provider's patient population coming from Shasta, CA. This provider's primary affiliated billing organization is SHASTA ORTHOPEDICS & SPORTS MEDICINE A MEDICAL CORPORATION (NPI: 1750493979; TIN: 680310525) and primary practice location at 96001-0814.

Chang's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 1,064 traditional Medicare patients, billed 28,495 HCPCS/CPT codes, and received $546,492 in Medicare payments. The top billing code was 99214 (Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more). Part D data shows 118 prescription claims across 56 beneficiaries totaling $1,495 in drug costs, led by Diclofenac Sodium (Diclofenac Sodium). DME data shows 25 claims. Open Payments data shows 5 records totaling $105. 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 risen steadily, from $418,433 to $546,492. In contrast, Part D prescription costs started with an early spike, then settled into a lower baseline, moving from $25,876 to $1,495. For DME billing, reported payments started with an early spike, then settled into a lower baseline, moving from $8,139 to $1,629.

Part B Carrier Billing Trend

Medicare payment trend, with N of patients and claim lines in the table.

Year	Patients	Clm Lines	Payment
2015	755	11,219	$418,433
2016	861	12,350	$440,476
2017	868	53,915	$454,440
2018	996	89,579	$534,361
2019	1,015	106,307	$625,093
2020	902	95,512	$711,925
2021	891	33,628	$757,480
2022	835	25,992	$641,572
2023	1,111	27,321	$633,065
2024	1,064	28,495	$546,492

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	171	371	$25,876
2016	82	160	$10,958
2017	80	129	$3,315
2018	78	153	$2,633
2019	56	131	$1,638
2020	87	181	$3,514
2021	52	144	$3,135
2022	48	130	$1,750
2023	50	107	$1,919
2024	56	118	$1,495

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	71	85	$7,874
2016	100	101	$10,399
2017	23	26	$1,646
2018	39	39	$2,547
2019	21	21	$1,141
2020	30	31	$2,147
2021	24	24	$2,174
2022	24	24	$3,020
2023	40	40	$4,416
2024	25	25	$3,204

* / # = 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
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	451	757	$95
20611	Aspiration and/or injection of fluid large joint using ultrasound guidance	273	981	$70
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	470	959	$69
J0702	Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg	493	1,259	$5
Q9967	Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml	397	1,351	$0

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Diclofenac Sodium	Diclofenac Sodium	74	2,473	$652
Diclofenac Potassium	Diclofenac Potassium	20	424	$246

Top 5 DME services in 2024

By Total Medicare Payment Amount.

HCPCS Code	HCPCS Description	Supplier Rental Indicator	Total Supplier Beneficiaries	Total Supplier Claims	Total Medicare Payment Amount
L1820	Knee orthosis, elastic with condylar pads and joints, with or without patellar control, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise	N	25	25	$3,204

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	5	$105	Pacira Pharmaceuticals Incorporated
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 Tony Li-Wei Chang, MD?

Tedicare shows public-source Medicare data for Tony Li-Wei Chang, MD (NPI 1871784678), 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 Tony Li-Wei Chang, MD have ACO affiliation data?

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

What billing organization is linked to Tony Li-Wei Chang, MD?

Tony Li-Wei Chang, MD is linked to SHASTA ORTHOPEDICS & SPORTS MEDICINE A MEDICAL CORPORATION (billing NPI 1750493979) in the available physician profile data.

Does Tony Li-Wei Chang, MD have Open Payments data?

Tony Li-Wei Chang, MD has 5 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.