What is Kenneth Ristau's specialty?

Kenneth Ristau (NPI 1235180233) is a Medicare-billing provider whose primary specialty is Optometry in Marshall, MN.

Where does Kenneth Ristau practice?

Kenneth Ristau practices in Marshall, MN, based on the location reported in the CMS Medicare provider datasets for NPI 1235180233.

How much does Medicare pay Kenneth Ristau?

Kenneth Ristau (NPI 1235180233) received approximately $14K in total Medicare Part B payments, serving 215 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1235180233

Kenneth RistauO.D.

PRACTICESHOPKO STORES OPERATING CO LLCSee all providers at this practice →

OptometryMarshall, MNI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

222

Unique beneficiaries

—

Total services

2,638

Distinct HCPCS

Medicare payment

$13K

Peer benchmark

Total Medicare services vs. 736 Optometry providers in MN — top quintile (cohort median 604).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$486

Distinct drugs

Brand share

21.7%

Top prescribed drugs

Latanoprost47 claims

Neomycin/Polymyxin B/Dexametha13 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Kenneth Ristau's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 2 inbound referrers · 3 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
SANFORD HEALTH NETWORK	14	20
SANFORD HEALTH NETWORK	11	14

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
AVERA MARSHALL	50	132
Curtis Louwagie Ophthalmology · Marshall, MN	26	63
SANFORD MEDICAL CENTER	13	17

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events