William Winselman, OD
NPI 1790409589 · Optometrist · Hastings, MN
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Winselman, OD is a Optometrist provider in Hastings, MN (NPI 1790409589).
Provider details
- NPI number
- 1790409589
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
- License
- T009609-01 (NY)
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
3 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
182 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 Complete Exam of Visual System92014 | 78 | $124 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 53 | $55 |
| New Patient Complete Exam of Visual System92004 | 39 | $147 |
| Imaging of Retina92134 | 12 | $40 |
Typical Medicare-allowed amounts for these services range $40–$147 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 91 | 22 |
| Tobramycin/Dexamethasonebrand: Tobramycin-Dexamethasone | 35 | 30 |
| Erythromycin Basebrand: Erythromycin | 26 | 24 |
| Moxifloxacin Hclbrand: Moxifloxacin | 20 | 16 |
| Prednisolone Acetate | 18 | 13 |
| Doxycycline Monohydrate | 12 | — |
| Timolol Maleate | 11 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-09-27
- Last updated
- 2023-08-16
- Certified
- 2023-06-26
Frequently asked questions
- What is William Winselman's NPI number?
- William Winselman's National Provider Identifier (NPI) is 1790409589, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Winselman's specialty?
- William Winselman is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is William Winselman located?
- William Winselman's practice location on file with NPPES is 1880 N Frontage Rd, Hastings, MN 55033-2687.
- What is William Winselman's phone number?
- The practice phone number listed in the NPPES registry for William Winselman is (651) 438-1800.
- Does William Winselman accept Medicare?
- William Winselman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Winselman's NPI active?
- Yes — William Winselman's NPI (1790409589) is active in the NPPES registry as of the last update on 2023-08-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.