William Vernon Ritzel, OD
- Medicare patients, 2024
- 337
- Part D claims, 2024
- 359
- Industry payments
- $14
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 22 N Jackson St, Belleville, IL 62220-1425
- Practice phone
- Call (618) 233-1270
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Belleville Optometrists, Ltd.
Eye care practice · Belleville, Illinois
Find William Ritzel's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
William Vernon Ritzel is an optometrist in Belleville, Illinois
William Ritzel practices at Belleville Optometrists, Ltd. in Belleville, Illinois.
William Ritzel's NPI, 1699763458, was assigned on October 6, 2005. William Ritzel holds Illinois license 46-9636.
- NPI
- 1699763458NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991772162
- NPI enumeration date
- October 6, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (618) 233-1270
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
William Vernon Ritzel practices at Belleville Optometrists, Ltd. in Belleville, Illinois
William Ritzel's primary practice is Belleville Optometrists, Ltd., at 22 N Jackson St, Belleville, IL 62220-1425. The practice phone is (618) 233-1270.
- Belleville Optometrists, Ltd.22 N Jackson St, Belleville, IL 62220-1425Phone(618) 233-1270
Source: Dmand AI Affiliation Data
William Vernon Ritzel is affiliated with 1 site of care and 1 medical group
William Ritzel's primary practice is Belleville Optometrists, Ltd. in Belleville, Illinois. Dmand AI also links William Ritzel to 1 medical group, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at William Vernon Ritzel's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Ritzel practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Belleville Optometrists, Ltd. | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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William Vernon Ritzel is one of 2,194 optometrists in Illinois
Optometrist is William Ritzel's primary specialty in the NPI Registry, under taxonomy code 152W00000X. William Ritzel is licensed in Illinois.
Specialties and state licenses
- Optometrist, IllinoisPrimary
Optometrists near William Ritzel
Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
William Vernon Ritzel treated 337 Medicare patients in 2024, average age 75
CMS counts 337 Medicare patients who saw William Ritzel in 2024. The largest group is 65 to 74, with 163 patients. 75% of them have high cholesterol, and 71% have high blood pressure. Their average risk score is 0.94, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts William Ritzel's median patient age at 72, with 55% women.
William Ritzel's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
William Ritzel's Medicare patients by sex, 2024
- Women19257%
- Men14543%
Chronic conditions among William Ritzel's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Arthritis48%
- Diabetes28%
- Ischemic heart disease26%
- Anxiety17%
- Cancer17%
- Chronic kidney disease17%
Share of Medicare patients with each condition. A patient can have several.
William Ritzel's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William Vernon Ritzel wrote 359 Medicare Part D claims in 2024
In 2024, William Ritzel wrote 359 Medicare Part D claims for 89 patients. 73% of them were for generic drugs.
William Ritzel's Part D claims by kind of drug, 2024
- Generic262 claims73%
- Brand-name97 claims27%
Drug classes CMS tracks in William Ritzel's Part D claims, 2024
- Antibiotics8%28 of 359 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
William Vernon Ritzel ranks in the 70th percentile for cataract surgery in Medicare
William Ritzel accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 73 procedures of cataract surgery by William Ritzel, more than 70% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where William Ritzel ranks in Medicare procedure volume
- Cataract surgery
- 70th percentile73 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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William Vernon Ritzel received $14 in industry payments in 2025
CMS Open Payments shows 1 general payment to William Ritzel from 1 drug or device company in 2025. Entertainment make up the largest share, 100% of the total. Optos, Inc. paid the most, $14.
Companies that paid William Ritzel the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for William Vernon Ritzel's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about William Vernon Ritzel
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is William Vernon Ritzel's NPI number?
William Vernon Ritzel's NPI number is 1699763458. It was assigned on October 6, 2005, and it is active in the NPI Registry.
What does William Vernon Ritzel specialize in?
William Vernon Ritzel is an optometrist in Belleville, Illinois. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does William Vernon Ritzel practice?
William Ritzel practices at 22 N Jackson St, Belleville, IL 62220-1425. William Ritzel's primary practice is Belleville Optometrists, Ltd. in Belleville, Illinois. Dmand AI also links William Ritzel to 1 medical group.
What is William Vernon Ritzel's office phone number?
The practice phone on file for William Ritzel is (618) 233-1270.
What is William Vernon Ritzel's medical license number?
William Ritzel holds Illinois license 46-9636.
Does William Vernon Ritzel accept Medicare?
Yes. CMS lists William Ritzel as accepting Medicare assignment.
How many Medicare patients does William Vernon Ritzel see?
CMS counts 337 Medicare patients who saw William Ritzel in 2024, with an average age of 75.
Has William Vernon Ritzel received payments from drug or device companies?
CMS Open Payments shows $14 in general payments to William Ritzel from 1 company from 2025 to 2025. The largest total came from Optos, Inc.
How long has William Vernon Ritzel been practicing?
William Ritzel graduated from medical school in 2000, 26 years ago.
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