William Ritzel, O.D.
NPI 1699763458 · Optometrist · Belleville, IL
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1699763458
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 46-9636 (IL)
Specialties & taxonomies
Eye and Vision Services Providers
Eye and Vision Services Providers
Eye and Vision Services Providers
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 tenure25% of score
20 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
3,483 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) |
|---|---|---|
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 2,884 | $1 |
| Established Patient Complete Exam of Visual System92014 | 277 | $117 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 76 | $53 |
| Photography of the Retina92250 | 72 | $35 |
| Imaging of Retina92134 | 52 | $38 |
| Exam of Visual Field With Extended Testing92083 | 36 | $59 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 174 | 41 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 35 | — |
| Timolol Maleate | 19 | — |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 15 | — |
| Brinzolamidebrand: Azopt | 14 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 12 | — |
| Brimonidine Tartrate | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$225 across 6 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
- 2005-10-06
- Last updated
- 2010-11-10
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.