Physician

Jonathan S Chang, M.D.

According to 2025 Medicare claims, Jonathan Chang, M.D. (NPI: 1346403961) practices ophthalmology in the Rockford, IL market, with the plurality of this provider's patient population coming from Winnebago, IL. This provider's primary affiliated billing organization is UNIVERSITY OF WISCONSIN MEDICAL FOUNDATION, INC (NPI: 1598784555; TIN: 391824445) and primary practice location at 61107-2611. Chang is affiliated with the NewYork Quality Care (ACO ID: A2571) and UW Health ACO, Inc (ACO ID: A5500), participating under the MSSP model.

Chang's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 534 traditional Medicare patients, billed 7,583 HCPCS/CPT codes, and received $539,754 in Medicare payments. The top billing code was 67028 (Injection of drug into eye). Part D data shows 246 prescription claims across 94 beneficiaries totaling $7,025 in drug costs, led by Prednisolone Acetate (Prednisolone Acetate). No Open Payments records. 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 did not follow a clear longitudinal pattern. Concurrently, Part D prescription costs started with an early spike, then settled into a lower baseline, moving from $14,293 to $7,025. 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	368	1,942	$359,652
2016	465	2,779	$482,280
2017	462	3,503	$468,515
2018	621	4,749	$732,268
2019	612	4,794	$763,102
2020	517	3,771	$651,916
2021	506	3,800	$655,601
2022	551	3,781	$631,493
2023	537	7,058	$581,666
2024	534	7,583	$539,754

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	58	162	$14,293
2016	90	293	$46,799
2017	95	285	$20,292
2018	69	206	$17,645
2019	51	145	$13,485
2020	57	130	$8,927
2021	49	117	$6,621
2022	68	188	$10,743
2023	73	225	$9,801
2024	94	246	$7,025

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
67028	Injection of drug into eye	158	589	$75
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	428	842	$50
92134	Imaging of retina	484	1,128	$20
92201	Extended exam of the back part of the eye with retinal drawing	157	159	$15
G2211	Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	284	387	$11

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Prednisolone Acetate	Prednisolone Acetate	84	3,666	$3,364
Dorzolamide-Timolol	Dorzolamide Hcl/Timolol Maleat	23	1,553	$335
Polymyxin B Sul-Trimethoprim	Polymyxin B Sulf/Trimethoprim	33	897	$198
Latanoprost	Latanoprost	20	1,445	$185
Ketorolac Tromethamine	Ketorolac Tromethamine	14	650	$181

Top 5 DME services in 2024

No connected or detailed DME service-level records for 2024.

Open Payments Summary

No connected Open Payments records were found for this physician in General Payments, Research Payments, or Ownership / Investment Interests.

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FAQ

What Medicare data is available for Jonathan S. Chang, M.D.?

Tedicare shows public-source Medicare data for Jonathan S. Chang, M.D. (NPI 1346403961), 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 Jonathan S. Chang, M.D. have ACO affiliation data?

Jonathan S. Chang, M.D. is shown with ACO affiliation data for NewYork Quality Care (MSSP, ACO ID A2571) and UW Health ACO, Inc (MSSP, ACO ID A5500).

What billing organization is linked to Jonathan S. Chang, M.D.?

Jonathan S. Chang, M.D. is linked to UNIVERSITY OF WISCONSIN MEDICAL FOUNDATION, INC (billing NPI 1598784555) in the available physician profile data.

Does Jonathan S. Chang, M.D. have Open Payments data?

No connected Open Payments records are shown for this physician in the available General Payments, Research Payments, or Ownership / Investment Interests 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.