Physician

George Y Chao, MD

According to 2025 Medicare claims, George Chao, MD (NPI: 1548204506) practices endocrinology in the Modesto, CA market, with the plurality of this provider's patient population coming from Stanislaus, CA. This provider's primary affiliated billing organization is SUTTER VALLEY MEDICAL FOUNDATION (NPI: 1669846986; TIN: 680273974) and primary practice location at 95355-4201. Chao is affiliated with the Sutter Medicare Direct (ACO ID: A5279), participating under the MSSP model.

Chao's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 1,322 traditional Medicare patients, billed 27,094 HCPCS/CPT codes, and received $601,304 in Medicare payments. The top billing code was 99204 (New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more). Part D data shows 16,245 prescription claims across 1,356 beneficiaries totaling $5,776,180 in drug costs, led by Ozempic (Semaglutide). DME data shows 2,028 claims. Open Payments data shows 33 records totaling $2,772. 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 $399,218 to $601,304. Similarly, Part D prescription costs have moved from a lower plateau to a higher plateau, from $3,272,905 to $5,776,180. For DME billing, reported payments rose steadily, from $55,578 to $488,475.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	1,175	13,202	$399,218
2016	1,177	15,088	$382,880
2017	1,252	15,888	$413,441
2018	1,329	18,449	$465,497
2019	1,425	16,232	$438,117
2020	1,430	23,572	$498,026
2021	1,401	27,653	$626,087
2022	1,377	28,820	$605,063
2023	1,318	32,683	$628,538
2024	1,322	27,094	$601,304

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	1,082	19,423	$3,272,905
2016	1,113	17,278	$3,511,948
2017	1,152	16,212	$3,723,861
2018	1,219	15,134	$3,923,017
2019	1,304	14,195	$4,120,808
2020	1,345	17,249	$5,609,886
2021	1,451	20,536	$7,425,566
2022	1,385	18,520	$7,146,445
2023	1,388	17,729	$7,451,322
2024	1,356	16,245	$5,776,180

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	647	1,872	$82,400
2016	628	1,651	$64,687
2017	531	1,527	$90,515
2018	586	1,822	$143,878
2019	581	1,755	$156,507
2020	529	1,904	$229,906
2021	604	2,373	$312,199
2022	555	2,308	$311,608
2023	578	2,264	$335,502
2024	676	2,028	$522,501

* / # = 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
99204	New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	164	164	$111
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,197	2,148	$92
95251	Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report	22	22	$28
J0897	Injection, denosumab, 1 mg	164	13,620	$21
96372	Injection of drug or substance under skin or into muscle	184	323	$12

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Ozempic	Semaglutide	783	39,704	$1,232,158
Jardiance	Empagliflozin	830	50,601	$941,514
Farxiga	Dapagliflozin Propanediol	487	29,780	$534,222
Mounjaro	Tirzepatide	277	11,991	$425,530
Rybelsus	Semaglutide	201	11,370	$338,103

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
A4239	Supply allowance for non-adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service	N	200	776	$362,319
E0784	External ambulatory infusion pump, insulin	Y	22	130	$43,646
A4224	Supplies for maintenance of insulin infusion catheter, per week	N	47	149	$36,415
J1817	Insulin for administration through dme (i.e., insulin pump) per 50 units	N	29	118	$34,070
E2103	Non-adjunctive, non-implanted continuous glucose monitor or receiver	N	87	87	$19,202

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	33	$2,772	BETA BIONICS, 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 George Y. Chao, MD?

Tedicare shows public-source Medicare data for George Y. Chao, MD (NPI 1548204506), 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 George Y. Chao, MD have ACO affiliation data?

George Y. Chao, MD is shown with ACO affiliation data for Sutter Medicare Direct (MSSP, ACO ID A5279).

What billing organization is linked to George Y. Chao, MD?

George Y. Chao, MD is linked to SUTTER VALLEY MEDICAL FOUNDATION (billing NPI 1669846986) in the available physician profile data.

Does George Y. Chao, MD have Open Payments data?

George Y. Chao, MD has 33 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.