Terry Wolthuis, O.D.
NPI 1770524688 · Optometrist · Spearfish, SD
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Terry Wolthuis, O.D. is a Optometrist provider in Spearfish, SD (NPI 1770524688).
Provider details
- NPI number
- 1770524688
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- No
- License
- T567 (SD)
Specialties & taxonomies
Eye and Vision Services Providers
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
1,456 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) |
|---|---|---|
| Photography of the Retina92250 | 520 | $36 |
| Established Patient Complete Exam of Visual System92014 | 507 | $124 |
| Established Patient Problem Focused Exam of Visual System92012 | 94 | $88 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 71 | $98 |
| New Patient Complete Exam of Visual System92004 | 63 | $147 |
| Exam of Visual Field With Extended Testing92083 | 59 | $61 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 218 | 33 |
| Timolol Maleate | 60 | 16 |
| Brimonidine Tartrate | 57 | — |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 41 | 37 |
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
- 2006-06-10
- Last updated
- 2022-04-14
- Certified
- 2022-04-14
Frequently asked questions
- What is Terry Wolthuis's NPI number?
- Terry Wolthuis's National Provider Identifier (NPI) is 1770524688, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Terry Wolthuis's specialty?
- Terry Wolthuis is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Terry Wolthuis located?
- Terry Wolthuis's practice location on file with NPPES is 1230 North Avenue Suite 3, Spearfish, SD 57783-1572.
- What is Terry Wolthuis's phone number?
- The practice phone number listed in the NPPES registry for Terry Wolthuis is (605) 642-4656.
- Does Terry Wolthuis accept Medicare?
- Terry Wolthuis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Terry Wolthuis's NPI active?
- Yes — Terry Wolthuis's NPI (1770524688) is active in the NPPES registry as of the last update on 2022-04-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.