Physician

Gregory N Tjossem, M.D.

According to 2025 Medicare claims, Gregory Tjossem, M.D. (NPI: 1215931696) practices family practice in the La Crosse-Onalaska, WI-MN market, with the plurality of this provider's patient population coming from Houston, MN. This provider's primary affiliated billing organization is GUNDERSEN CLINIC LTD (NPI: 1851343115; TIN: 391028657) and primary practice location at 55974-1318. Tjossem is affiliated with the Caravan Collaborative Pathways (ACO ID: A4604), Gundersen ACO (ACO ID: A5094), and Caravan Health ACO 50 LLC (ACO ID: A5160), participating under the MSSP model.

Tjossem's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 128 traditional Medicare patients, billed 1,639 HCPCS/CPT codes, and received $15,213 in Medicare payments. The top billing code was G0439 (Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit). Part D data shows 2,520 prescription claims across 226 beneficiaries totaling $156,726 in drug costs, led by Eliquis (Apixaban). DME data shows 47 claims. 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 moved sharply higher in recent years, from $9,084 to $15,213. Similarly, Part D prescription costs have moved sharply higher in recent years, from $18,818 to $156,726. In contrast, DME billing represents a smaller volume and started with an early spike, then settled into a lower baseline, moving from $8,674 to $2,020.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	130	241	$9,084
2016	N/R	N/R	N/R
2017	N/R	N/R	N/R
2018	N/R	N/R	N/R
2019	N/R	N/R	N/R
2020	27	366	$2,381
2021	208	2,960	$39,127
2022	263	8,724	$60,447
2023	207	4,314	$47,315
2024	128	1,639	$15,213

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	116	552	$18,818
2016	96	653	$22,427
2017	147	1,046	$51,176
2018	164	1,396	$58,806
2019	229	1,532	$54,771
2020	224	1,526	$49,537
2021	258	2,076	$115,149
2022	306	4,231	$256,037
2023	262	4,302	$273,967
2024	226	2,520	$156,726

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	14	156	$7,380
2016	N/R	13	$336
2017	N/R	N/R	N/R
2018	N/R	N/R	N/R
2019	N/R	N/R	N/R
2020	N/R	N/R	N/R
2021	N/R	22	$10,600
2022	N/R	36	$10,484
2023	N/R	23	$12,005
2024	N/R	47	$12,484

* / # = 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
G0439	Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	23	23	$125
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	18	20	$94
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	67	83	$44

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Eliquis	Apixaban	26	1,424	$28,050
Xarelto	Rivaroxaban	35	867	$17,417
Jardiance	Empagliflozin	24	855	$15,841
Bydureon Bcise	Exenatide Microspheres	11	308	$9,643
Atorvastatin Calcium	Atorvastatin Calcium	170	12,035	$2,670

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
A4352	Intermittent urinary catheter; coude (curved) tip, with or without coating (teflon, silicone, silicone elastomeric, or hydrophilic, etc.), each	N	N/R	12	$11,126
E1390	Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate	Y	N/R	12	$817
K0738	Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing	Y	N/R	12	$404
A4253	Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips	N	N/R	11	$137

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 N. Tjossem, M.D.?

Tedicare shows public-source Medicare data for Gregory N. Tjossem, M.D. (NPI 1215931696), 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 N. Tjossem, M.D. have ACO affiliation data?

Gregory N. Tjossem, M.D. is shown with ACO affiliation data for Caravan Collaborative Pathways (MSSP, ACO ID A4604), Gundersen ACO (MSSP, ACO ID A5094), and Caravan Health ACO 50 LLC (MSSP, ACO ID A5160).

What billing organization is linked to Gregory N. Tjossem, M.D.?

Gregory N. Tjossem, M.D. is linked to GUNDERSEN CLINIC LTD (billing NPI 1851343115) in the available physician profile data.

Does Gregory N. Tjossem, 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.