Physician

Katherine Marie Marshall, OD

According to 2025 Medicare claims, Katherine Marshall, OD (NPI: 1255740239) practices optometrist in the South Bend-Mishawaka, IN-MI market, with the plurality of this provider's patient population coming from Cass, MI. This provider's primary affiliated billing organization is SOUTHWEST VISION CENTER INC. (NPI: 1871852939; TIN: 455125944) and primary practice location at 49047-9664.

Marshall's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 109 traditional Medicare patients, billed 201 HCPCS/CPT codes, and received $8,555 in Medicare payments. The top billing code was 92014 (Established patient complete exam of visual system). Part D data shows 106 prescription claims across 44 beneficiaries totaling $9,505 in drug costs, led by Tobramycin-Dexamethasone (Tobramycin/Dexamethasone). Open Payments data shows 2 records totaling $37. 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 did not follow a clear longitudinal pattern. Concurrently, Part D prescription costs have risen steadily, from $768 to $9,505. 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	N/R	N/R	N/R
2016	N/R	N/R	N/R
2017	102	134	$8,966
2018	156	228	$13,754
2019	129	192	$11,694
2020	145	248	$13,294
2021	165	258	$13,524
2022	138	224	$11,460
2023	119	236	$14,066
2024	109	201	$8,555

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	N/R	N/R	N/R
2016	N/R	14	$768
2017	N/R	15	$872
2018	13	24	$2,687
2019	21	42	$7,126
2020	33	101	$20,070
2021	38	114	$22,135
2022	41	132	$12,958
2023	54	118	$13,129
2024	44	106	$9,505

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
92014	Established patient complete exam of visual system	83	83	$59
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	21	24	$42
99212	Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	15	23	$27
92250	Photography of the retina	18	20	$17

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Tobramycin-Dexamethasone	Tobramycin/Dexamethasone	13	183	$512
Latanoprost	Latanoprost	43	2,767	$511
Timolol Maleate	Timolol Maleate	17	1,189	$210

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.	2	$37	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 Katherine Marie Marshall, OD?

Tedicare shows public-source Medicare data for Katherine Marie Marshall, OD (NPI 1255740239), 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 Katherine Marie Marshall, OD have ACO affiliation data?

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

What billing organization is linked to Katherine Marie Marshall, OD?

Katherine Marie Marshall, OD is linked to SOUTHWEST VISION CENTER INC. (billing NPI 1871852939) in the available physician profile data.

Does Katherine Marie Marshall, OD have Open Payments data?

Katherine Marie Marshall, OD has 2 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.