William Welder, OD
NPI 1629097332 · Optometrist · Wahpeton, ND
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Welder, OD is a Optometrist provider in Wahpeton, ND (NPI 1629097332).
Provider details
- NPI number
- 1629097332
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- Yes
- License
- ND0534 (ND)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
650 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 225 | $123 |
| Imaging of Retina92134 | 90 | $39 |
| Established Patient Problem Focused Exam of Visual System92012 | 74 | $87 |
| Photography of the Retina92250 | 60 | $36 |
| Imaging of Optic Nerve92133 | 40 | $33 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 39 | $104 |
| Exam of Visual Field With Extended Testing |
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 | 118 | 32 |
| Cyclosporinebrand: Restasis | 21 | 11 |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 20 | — |
| Brimonidine Tartrate | 18 | — |
| Prednisolone Acetate | 18 | 11 |
| Netarsudil Mesylat/Latanoprostbrand: Rocklatan | 16 | — |
| Timolol Maleate | 12 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$91 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-19
- Last updated
- 2008-06-16
Frequently asked questions
- What is William Welder's NPI number?
- William Welder's National Provider Identifier (NPI) is 1629097332, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Welder's specialty?
- William Welder is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is William Welder located?
- William Welder's practice location on file with NPPES is 315 11th St N, Wahpeton, ND 58075-4101.
- What is William Welder's phone number?
- The practice phone number listed in the NPPES registry for William Welder is (701) 642-4090.
- Does William Welder accept Medicare?
- William Welder is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Welder's NPI active?
- Yes — William Welder's NPI (1629097332) is active in the NPPES registry as of the last update on 2008-06-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.