Royce L. Grimsrud, O.D.
Optometrist · Sisseton, SD
Royce L. Grimsrud, O.D. is an optometrist with a practice address in Sisseton, South Dakota, and NPI 1033182936, issued on Feb 10, 2006. Check the license (South Dakota 437, as entered in NPPES) with the South Dakota board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Royce L. Grimsrud
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 437 SD
Self-reported in NPPES; status is on the state search - Practice location
- 121 E Maple St, Sisseton, SD 57262
- Phone
- (605) 698-4112
- Enumerated
- Feb 10, 2006
- Record last updated
- Jan 29, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (605) 698-3160
- Medicaid ID
- 9201690 SD
- Medicare enrollment
- Enrolled (PECOS I20050415000273); accepts Medicare assignment
- Medical or professional school
- Pacific University - College Of Optometry, 1983
- Entity
- Type 1 · individual
8 nearest optometrist records → All 245 in South Dakota → Look up another NPI →
Verify Royce L. Grimsrud in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Dakota board licenses this profession
Search for license 437Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average optometrist in 2024
260 Medicare Part D claims for 76 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Latanoprost133 claims
- Tobramycin-Dexamethasone43 claims
- Timolol Maleate24 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.
Royce L. Grimsrud among 245 optometrist records in South Dakota
Royce L. Grimsrud, O.D. is one of 245 optometrist records with a practice address in South Dakota. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 50% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1983 · median 2006 among the 183 with a school on file
- Record last updated2008 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 optometrist records list a practice address in Sisseton
They are 2 of the 147 NPPES records with a practice address in Sisseton, and 245 optometrist records in South Dakota.
All 245 in South Dakota → Every provider in Sisseton → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Cesar Bartell, O.D.Sisseton, SD 572621952596447
- John Conroy, ODMilbank, SD 572521144219213
- Nicholas Gilmore, O.D.Milbank, SD 572521124079223
- Phillip Becker, ODMitchell, SD 573011407344559
- Deborah Bessler, O.D.Mitchell, SD 573011568653426
- Gregg Bleeker, O.D.Mitchell, SD 573011942271382
- Grace Grabenstein, ODMitchell, SD 573011932087343
- Sheila Grieve, O.D.Mitchell, SD 573011427206309
Common questions
What is Royce L. Grimsrud, O.D.'s NPI number?
Royce L. Grimsrud, O.D.'s National Provider Identifier (NPI) is 1033182936, issued on Feb 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Royce L. Grimsrud, O.D. located?
The NPPES record lists a practice address at 121 E Maple St, Sisseton, SD, 57262. Phone: (605) 698-4112. Providers update this record themselves, so call before visiting.
How can I verify Royce L. Grimsrud, O.D.'s license?
NPPES lists South Dakota license number 437, as entered by the provider. Search the South Dakota board that licenses this profession; the NPPES record confirms identity only.
How much does Royce L. Grimsrud, O.D. prescribe under Medicare Part D?
In 2024, Royce L. Grimsrud, O.D. had 260 Medicare Part D claims for 76 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.