Physician

Gregory Lucien Fenton, M.D.

According to 2025 Medicare claims, Gregory Fenton, M.D. (NPI: 1114136959) practices ophthalmology in the Chicago-Naperville-Schaumburg, IL market, with the plurality of this provider's patient population coming from Du Page, IL. This provider's primary affiliated billing organization is WHEATON EYE CLINIC LTD (NPI: 1801883004; TIN: 362709692) and primary practice location at 60187-3152. Fenton is affiliated with the Northwestern Medicine Health Network ACO LLC (ACO ID: A5444), participating under the MSSP model.

Fenton's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 1,477 traditional Medicare patients, billed 58,628 HCPCS/CPT codes, and received $2,999,807 in Medicare payments. The top billing code was J0178 (Injection, aflibercept, 1 mg). Part D data shows 954 prescription claims across 239 beneficiaries totaling $45,700 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 has changed little. Concurrently, Part D prescription costs have moved sharply higher in recent years, from $19,934 to $45,700. 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	834	11,579	$2,100,786
2016	851	12,450	$2,574,408
2017	797	12,463	$2,598,074
2018	757	12,360	$2,755,593
2019	892	12,148	$2,696,446
2020	888	12,077	$2,748,111
2021	1,151	12,803	$2,871,490
2022	1,312	15,268	$2,604,235
2023	1,396	47,259	$2,834,661
2024	1,477	58,628	$2,999,807

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	104	332	$19,934
2016	111	372	$22,943
2017	109	367	$23,218
2018	111	400	$22,629
2019	130	513	$26,238
2020	143	557	$33,592
2021	200	783	$29,625
2022	227	997	$50,723
2023	250	1,013	$52,527
2024	239	954	$45,700

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
J0178	Injection, aflibercept, 1 mg	184	1,542	$658
67028	Injection of drug into eye	392	1,880	$94
92014	Established patient complete exam of visual system	1,145	1,486	$91
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	389	812	$66
92134	Imaging of retina	1,318	3,519	$31

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Prednisolone Acetate	Prednisolone Acetate	394	11,694	$10,771
Prolensa	Bromfenac Sodium	21	1,286	$9,235
Bromfenac Sodium	Bromfenac Sodium	21	1,341	$4,762
Ketorolac Tromethamine	Ketorolac Tromethamine	180	6,026	$2,557
Difluprednate	Difluprednate	17	465	$1,695

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 Gregory Lucien Fenton, M.D.?

Tedicare shows public-source Medicare data for Gregory Lucien Fenton, M.D. (NPI 1114136959), 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 Gregory Lucien Fenton, M.D. have ACO affiliation data?

Gregory Lucien Fenton, M.D. is shown with ACO affiliation data for Northwestern Medicine Health Network ACO LLC (MSSP, ACO ID A5444).

What billing organization is linked to Gregory Lucien Fenton, M.D.?

Gregory Lucien Fenton, M.D. is linked to WHEATON EYE CLINIC LTD (billing NPI 1801883004) in the available physician profile data.

Does Gregory Lucien Fenton, 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.