William Joseph Ryan III, OD
- Medicare patients, 2024
- 113
- Part D claims, 2024
- 16
- Industry payments
- $124
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 435 Boston Post Rd, Sudbury, MA 01776-3000
- Practice phone
- Call (978) 443-7121
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Pearle Vision
Eye care practice · Sudbury, Massachusetts
Find William Ryan'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 Joseph Ryan III is an optometrist in Sudbury, Massachusetts
William Ryan practices at Pearle Vision in Sudbury, Massachusetts.
William Ryan's NPI, 1487761680, was assigned on August 24, 2006. William Ryan graduated from New England College of Optometry in 1984. William Ryan holds Massachusetts license 3137.
- NPI
- 1487761680NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6800972472
- NPI enumeration date
- August 24, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (978) 443-7121
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
William Joseph Ryan III practices at Pearle Vision in Sudbury, Massachusetts
William Ryan's primary practice is Pearle Vision, at 435 Boston Post Rd, Sudbury, MA 01776-3000. The practice phone is (978) 443-7121.
- Pearle Vision435 Boston Post Rd, Sudbury, MA 01776-3000Phone(978) 443-7121
Source: Dmand AI Affiliation Data
William Joseph Ryan III is affiliated with 2 sites of care and 2 medical groups
William Ryan's primary practice is Pearle Vision in Sudbury, Massachusetts. Dmand AI also links William Ryan to 2 medical groups and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at William Joseph Ryan III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Ryan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pearle Vision | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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William Joseph Ryan III is one of 1,098 optometrists in Massachusetts
Optometrist is William Ryan's primary specialty in the NPI Registry, under taxonomy code 152W00000X. William Ryan is licensed in Massachusetts.
Specialties and state licenses
- Optometrist, MassachusettsPrimary
Optometrists near William Ryan
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 Joseph Ryan III treated 113 Medicare patients in 2024, average age 72
CMS counts 113 Medicare patients who saw William Ryan in 2024. The largest group is 65 to 74, with 68 patients. 62% of them have high cholesterol, and 58% have high blood pressure. 11% are also on Medicaid. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts William Ryan's median patient age at 57, with 50% women.
William Ryan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
William Ryan's Medicare patients by sex, 2024
- Women7163%
- Men4237%
Chronic conditions among William Ryan's Medicare patients, 2024
- High cholesterol62%
- High blood pressure58%
- Arthritis42%
- Anxiety24%
- Cancer19%
- Diabetes18%
- Ischemic heart disease17%
- Mood disorders17%
Share of Medicare patients with each condition. A patient can have several.
William Ryan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William Joseph Ryan III wrote 16 Medicare Part D claims in 2024
In 2024, William Ryan wrote 16 Medicare Part D claims.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How William Joseph Ryan III takes part in Medicare
William Ryan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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William Joseph Ryan III received $124 in industry payments in 2025
CMS Open Payments shows 6 general payments to William Ryan from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Bausch & Lomb Americas Inc. paid the most, $124.
Companies that paid William Ryan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
William Joseph Ryan III graduated from New England College of Optometry
William Ryan graduated from New England College of Optometry in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for William Joseph Ryan III'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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 Joseph Ryan III
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 Joseph Ryan III's NPI number?
William Joseph Ryan III's NPI number is 1487761680. It was assigned on August 24, 2006, and it is active in the NPI Registry.
What does William Joseph Ryan III specialize in?
William Joseph Ryan III is an optometrist in Sudbury, Massachusetts. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does William Joseph Ryan III practice?
William Ryan practices at 435 Boston Post Rd, Sudbury, MA 01776-3000. William Ryan's primary practice is Pearle Vision in Sudbury, Massachusetts. Dmand AI also links William Ryan to 2 medical groups and 1 group practice or clinic.
What is William Joseph Ryan III's office phone number?
The practice phone on file for William Ryan is (978) 443-7121.
What is William Joseph Ryan III's medical license number?
William Ryan holds Massachusetts license 3137.
Does William Joseph Ryan III accept Medicare?
Yes. CMS lists William Ryan as accepting Medicare assignment.
How many Medicare patients does William Joseph Ryan III see?
CMS counts 113 Medicare patients who saw William Ryan in 2024, with an average age of 72.
Where did William Joseph Ryan III go to medical school?
William Ryan graduated from New England College of Optometry in 1984.
Has William Joseph Ryan III received payments from drug or device companies?
CMS Open Payments shows $124 in general payments to William Ryan from 1 company from 2025 to 2025. The largest total came from Bausch & Lomb Americas Inc.
How long has William Joseph Ryan III been practicing?
William Ryan graduated from medical school in 1984, 42 years ago.
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