Physician

John William Karth, M.D.

According to 2025 Medicare claims, John Karth, M.D. (NPI: 1588862320) practices ophthalmology in the Eugene-Springfield, OR market, with the plurality of this provider's patient population coming from Lane, OR. This provider's primary affiliated billing organization is OREGON EYE CONSULTANTS LLC (NPI: 1023199734; TIN: 93-1292903) and primary practice location at 97471-8899.

Karth's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 1,235 traditional Medicare patients, billed 122,773 HCPCS/CPT codes, and received $5,276,381 in Medicare payments. The top billing code was 67028 (Injection of drug into eye). Part D data shows 945 prescription claims across 291 beneficiaries totaling $64,633 in drug costs, led by Prolensa (Bromfenac Sodium). Open Payments data shows 22 records totaling $569. 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 $1,120,167 to $5,276,381. Concurrently, Part D prescription costs have changed little. 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	1,033	13,082	$1,120,167
2016	1,066	14,040	$1,329,558
2017	1,065	14,293	$1,465,653
2018	1,027	15,081	$2,127,475
2019	1,052	15,060	$1,853,108
2020	995	15,562	$3,536,492
2021	1,040	14,190	$3,517,315
2022	1,066	15,905	$3,549,370
2023	1,169	80,197	$4,569,199
2024	1,235	122,773	$5,276,381

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	418	1,100	$57,847
2016	324	856	$57,185
2017	328	875	$62,637
2018	292	831	$74,816
2019	277	766	$80,311
2020	244	704	$71,022
2021	248	797	$74,926
2022	284	957	$81,707
2023	238	850	$73,889
2024	291	945	$64,633

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	522	2,842	$97
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	494	814	$96
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	697	1,064	$59
92134	Imaging of retina	1,189	3,705	$30
J2777	Injection, faricimab-svoa, 0.1 mg	267	104,400	$27

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Prolensa	Bromfenac Sodium	29	928	$10,186
Bromfenac Sodium	Bromfenac Sodium	85	2,388	$9,978
Difluprednate	Difluprednate	73	2,020	$8,236
Prednisolone Acetate	Prednisolone Acetate	123	4,767	$4,468
Ilevro	Nepafenac	12	329	$4,310

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.	22	$569	ABBVIE 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 John William Karth, M.D.?

Tedicare shows public-source Medicare data for John William Karth, M.D. (NPI 1588862320), 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 John William Karth, M.D. have ACO affiliation data?

No ACO affiliation record is shown in the available Tedicare data for this profile.

What billing organization is linked to John William Karth, M.D.?

John William Karth, M.D. is linked to OREGON EYE CONSULTANTS LLC (billing NPI 1023199734) in the available physician profile data.

Does John William Karth, M.D. have Open Payments data?

John William Karth, M.D. has 22 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.