Physician

Karl R. Westenfelder, M.D.

According to 2025 Medicare claims, Karl Westenfelder, M.D. (NPI: 1174502173) practices urology in the Missoula, MT market, with the plurality of this provider's patient population coming from Missoula, MT. This provider's primary affiliated billing organization is FIVE VALLEYS UROLOGY (NPI: 1720067705; TIN: 651167362) and primary practice location at 59808-1582. Westenfelder is affiliated with the Health Connect Partners, LLC (ACO ID: A2342), Kootenai Accountable Care, LLC (ACO ID: A3621), Caravan Collaborative Pathways (ACO ID: A4604), Caravan Health ACO 50 LLC (ACO ID: A5160), MountainStar Care Partners ACO (ACO ID: A5181), Collaborative ACO 30, LLC (ACO ID: A5483), and CoreHealth Alliance LLC (ACO ID: A5645), participating under the MSSP model.

Westenfelder's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 728 traditional Medicare patients, billed 7,917 HCPCS/CPT codes, and received $672,226 in Medicare payments. The top billing code was 99214 (Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more). Part D data shows 1,120 prescription claims across 293 beneficiaries totaling $1,729,940 in drug costs, led by Xtandi (Enzalutamide). DME data shows 382 claims. Open Payments data shows 25 records totaling $654. 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 lower plateau to a higher plateau, from $292,420 to $672,226. Similarly, Part D prescription costs have moved sharply higher in recent years, from $55,675 to $1,729,940. In contrast, DME billing represents a smaller volume and moved up and down with repeated peaks and valleys, starting at $227 and ending at $492.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	712	10,269	$292,420
2016	678	7,545	$262,907
2017	657	8,847	$344,594
2018	734	7,490	$405,876
2019	745	10,676	$462,316
2020	662	11,022	$494,453
2021	716	7,662	$744,259
2022	692	6,514	$664,037
2023	680	7,951	$607,727
2024	728	7,917	$672,226

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	177	483	$55,675
2016	164	529	$64,708
2017	217	576	$57,346
2018	195	536	$113,811
2019	184	554	$242,895
2020	181	590	$238,130
2021	194	565	$881,928
2022	214	558	$443,048
2023	199	634	$763,969
2024	293	1,120	$1,729,940

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	N/R	199	$31,797
2016	N/R	165	$33,906
2017	11	202	$36,142
2018	15	289	$38,204
2019	14	268	$48,745
2020	15	278	$54,738
2021	38	202	$49,460
2022	11	186	$55,869
2023	25	223	$73,602
2024	85	382	$73,871

* / # = 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
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	243	291	$93
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	247	272	$58
84153	Psa (prostate specific antigen) measurement, total	154	245	$18
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	352	420	$12
36415	Insertion of needle into vein for collection of blood sample	177	282	$9

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Xtandi	Enzalutamide	59	1,770	$713,809
Orgovyx	Relugolix	217	6,508	$561,559
Abiraterone Acetate	Abiraterone Acetate	119	3,570	$275,164
Myrbetriq	Mirabegron	29	1,170	$19,016
Penicillamine	Penicillamine	11	330	$15,355

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	34	$28,017
A4351	Intermittent urinary catheter; straight tip, with or without coating (teflon, silicone, silicone elastomer, or hydrophilic, etc.), each	N	17	98	$20,166
A4353	Intermittent urinary catheter, with insertion supplies	N	N/R	14	$12,764
A4409	Ostomy skin barrier, with flange (solid, flexible or accordion), extended wear, without built-in convexity, 4 x 4 inches or smaller, each	N	N/R	25	$3,089
A4430	Ostomy pouch, urinary, with extended wear barrier attached, with built-in convexity, with faucet-type tap with valve (1 piece), each	N	N/R	18	$2,998

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	25	$654	Dornier MedTech America, 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 Karl R. Westenfelder, M.D.?

Tedicare shows public-source Medicare data for Karl R. Westenfelder, M.D. (NPI 1174502173), 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 Karl R. Westenfelder, M.D. have ACO affiliation data?

Karl R. Westenfelder, M.D. is shown with ACO affiliation data for Health Connect Partners, LLC (MSSP, ACO ID A2342), Kootenai Accountable Care, LLC (MSSP, ACO ID A3621), Caravan Collaborative Pathways (MSSP, ACO ID A4604), Caravan Health ACO 50 LLC (MSSP, ACO ID A5160), MountainStar Care Partners ACO (MSSP, ACO ID A5181), Collaborative ACO 30, LLC (MSSP, ACO ID A5483), and CoreHealth Alliance LLC (MSSP, ACO ID A5645).

What billing organization is linked to Karl R. Westenfelder, M.D.?

Karl R. Westenfelder, M.D. is linked to FIVE VALLEYS UROLOGY (billing NPI 1720067705) in the available physician profile data.

Does Karl R. Westenfelder, M.D. have Open Payments data?

Karl R. Westenfelder, M.D. has 25 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.