Physician

Clarence G Tam, MD

According to 2025 Medicare claims, Clarence Tam, MD (NPI: 1447365960) practices ophthalmology in the Fond du Lac, WI market, with the plurality of this provider's patient population coming from Fond Du Lac, WI. This provider's primary affiliated billing organization is AGNESIAN HEALTHCARE INC (NPI: 1730162991; TIN: 390807236) and primary practice location at 54935-8335. Tam is affiliated with the SSM WI ACO LLC (ACO ID: A5124), participating under the MSSP model.

Tam's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 298 traditional Medicare patients, billed 1,021 HCPCS/CPT codes, and received $110,323 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 1,215 prescription claims across 321 beneficiaries totaling $86,552 in drug costs, led by Prednisolone Acetate (Prednisolone Acetate). 2023 DME data shows 15 claims. Open Payments data shows 1 records totaling $15. 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 moved from a higher plateau to a lower plateau, from $334,269 to $110,323. Concurrently, Part D prescription costs have changed little. In contrast, DME billing represents a smaller volume and changed little.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	677	4,446	$334,269
2016	638	4,052	$277,753
2017	605	4,381	$276,534
2018	554	3,447	$210,896
2019	534	3,306	$228,776
2020	449	2,340	$168,371
2021	476	3,208	$194,315
2022	403	1,911	$153,847
2023	329	1,494	$130,619
2024	298	1,021	$110,323

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	628	1,681	$117,579
2016	447	1,489	$110,939
2017	395	1,775	$142,375
2018	288	1,536	$107,430
2019	284	1,517	$123,119
2020	243	1,281	$109,998
2021	270	1,248	$101,397
2022	301	1,388	$109,513
2023	356	1,423	$141,814
2024	321	1,215	$86,552

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	144	147	$9,730
2016	112	113	$7,335
2017	73	73	$4,844
2018	45	46	$3,138
2019	39	39	$2,631
2020	30	30	$2,006
2021	21	21	$1,175
2022	29	30	$1,928
2023	15	15	$940
2024	N/R	N/R	N/R

* / # = 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	89	89	$110
92014	Established patient complete exam of visual system	180	233	$78
76519	Ultrasound scan to determine eye length and lens power	75	83	$45
92083	Exam of visual field with extended testing	84	85	$39
92133	Imaging of optic nerve	71	72	$22

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Prednisolone Acetate	Prednisolone Acetate	178	9,004	$13,884
Restasis	Cyclosporine	21	795	$12,186
Cyclosporine	Cyclosporine	23	966	$9,840
Vyzulta	Latanoprostene Bunod	18	1,279	$8,920
Rhopressa	Netarsudil Mesylate	20	1,045	$7,685

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.	1	$15	Alcon Vision 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 Clarence G. Tam, MD?

Tedicare shows public-source Medicare data for Clarence G. Tam, MD (NPI 1447365960), 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 Clarence G. Tam, MD have ACO affiliation data?

Clarence G. Tam, MD is shown with ACO affiliation data for SSM WI ACO LLC (MSSP, ACO ID A5124).

What billing organization is linked to Clarence G. Tam, MD?

Clarence G. Tam, MD is linked to AGNESIAN HEALTHCARE INC (billing NPI 1730162991) in the available physician profile data.

Does Clarence G. Tam, MD have Open Payments data?

Clarence G. Tam, MD has 1 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.