Royce Grimsrud, O.D.
NPI 1033182936 · Optometrist · Sisseton, SD
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Royce Grimsrud, O.D. is a Optometrist provider in Sisseton, SD (NPI 1033182936).
Provider details
- NPI number
- 1033182936
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 437 (SD)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
246 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 107 | $122 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 53 | $82 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 40 | $148 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 26 | $102 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 20 | $147 |
Typical Medicare-allowed amounts for these services range $82–$148 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 133 | 26 |
| Tobramycin/Dexamethasonebrand: Tobramycin-Dexamethasone | 43 | 34 |
| Timolol Maleate | 24 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-10
- Last updated
- 2008-01-29
Frequently asked questions
- What is Royce Grimsrud's NPI number?
- Royce Grimsrud's National Provider Identifier (NPI) is 1033182936, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Royce Grimsrud's specialty?
- Royce Grimsrud is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Royce Grimsrud located?
- Royce Grimsrud's practice location on file with NPPES is 121 E Maple St, Sisseton, SD 57262-1412.
- What is Royce Grimsrud's phone number?
- The practice phone number listed in the NPPES registry for Royce Grimsrud is (605) 698-4112.
- Does Royce Grimsrud accept Medicare?
- Royce Grimsrud is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Royce Grimsrud's NPI active?
- Yes — Royce Grimsrud's NPI (1033182936) is active in the NPPES registry as of the last update on 2008-01-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.