Kenneth H. Ristau, O.D.
Optometrist · Marshall, MN
Kenneth H. Ristau, O.D. is an optometrist with a practice address in Marshall, Minnesota, and NPI 1235180233, issued on May 14, 2006. Check the license (Minnesota 2643, as entered in NPPES) with the Minnesota board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kenneth H. Ristau
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 2643 MN
Self-reported in NPPES; status is on the state search - Practice location
- 1200 Susan Dr, Marshall, MN 56258
- Phone
- (507) 537-9652
- Enumerated
- May 14, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (507) 537-9646
- Medicare enrollment
- Enrolled (PECOS I20060627000337); accepts Medicare assignment
- Medical or professional school
- Illinois College Of Optometry At Chicago, 1997
- Entity
- Type 1 · individual
Also registered at 1200 Susan Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sandi Bartz, RPHPharmacist1992122428
Verify Kenneth H. Ristau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Minnesota board licenses this profession
Search for license 2643Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average optometrist in 2024
83 Medicare Part D claims for 21 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Latanoprost47 claims
- Neomycin-Polymyxin-Dexameth13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Shoptikal LLCAustin, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
9 optometrist records list a practice address in Marshall
They are 9 of the 407 NPPES records with a practice address in Marshall, and 1,142 optometrist records in Minnesota.
All 9 in Marshall → All 1,142 in Minnesota → Every provider in Marshall →
Other optometrist records in Minnesota
- Michael Ackermann, ODLake City, MN1063441830
- Bradley Adams, O.D.Brainerd, MN1477652212
- Kristin Adams, ODMinneapolis, MN1447779442
- Anna Aho, ODAnnandale, MN1518537786
- Kamran Ahrar, ODLakeville, MN1134156755
- Stephen Akre, O.D.New Ulm, MN1881680056
- Afrouz Alai, O.DCottage Grove, MN1861920266
- Mitchell Albers, O.D.Maplewood, MN1407806763
- Toni Albrecht, ODEdina, MN1679580500
- Franklin AlexanderWhite Bear Lake, MN1134955933
Common questions
What is Kenneth H. Ristau, O.D.'s NPI number?
Kenneth H. Ristau, O.D.'s National Provider Identifier (NPI) is 1235180233, issued on May 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth H. Ristau, O.D. located?
The NPPES record lists a practice address at 1200 Susan Dr, Marshall, MN, 56258. Phone: (507) 537-9652. Providers update this record themselves, so call before visiting.
How can I verify Kenneth H. Ristau, O.D.'s license?
NPPES lists Minnesota license number 2643, as entered by the provider. Search the Minnesota board that licenses this profession; the NPPES record confirms identity only.
How much does Kenneth H. Ristau, O.D. prescribe under Medicare Part D?
In 2024, Kenneth H. Ristau, O.D. had 83 Medicare Part D claims for 21 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.