William Yu, OD
- Medicare patients, 2024
- 36
- Part D claims, 2024
- 50
- Industry payments
- $93
- Affiliated sites
- 2
- State license
- 1
- Practice address
- 6465 National Drive, Livermore, CA 94550
- Practice phone
- Call (877) 262-4669
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Acelis Connected Health Services
Imaging Center - Main Location · Livermore, California
Find William Yu'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 Yu is an optometrist in Livermore, California
William Yu practices at Acelis Connected Health Services in Livermore, California.
William Yu's NPI, 1164670048, was assigned on September 3, 2008. William Yu holds Florida license OPC 4398.
- NPI
- 1164670048NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345305769
- NPI enumeration date
- September 3, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (877) 262-4669
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
William Yu practices at Acelis Connected Health Services in Livermore, California
William Yu's primary practice is Acelis Connected Health Services, at 6465 National Drive, Livermore, CA 94550. The practice phone is (877) 262-4669.
- Acelis Connected Health Services6465 National Drive, Livermore, CA 94550Phone(877) 262-4669
Source: Dmand AI Affiliation Data
William Yu is affiliated with 2 sites of care
William Yu's primary practice is Acelis Connected Health Services in Livermore, California. Dmand AI also links William Yu to 1 physician office, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at William Yu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Yu practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Acelis Connected Health Services | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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William Yu is one of 7,206 optometrists in California
Optometrist is William Yu's primary specialty in the NPI Registry, under taxonomy code 152W00000X. William Yu is licensed in Florida.
Specialties and state licenses
- Optometrist, FloridaPrimary
Optometrists near William Yu
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 Yu treated 36 Medicare patients in 2024, average age 74
CMS counts 36 Medicare patients who saw William Yu in 2024. The largest group is 65 to 74, with 22 patients. 75% of them have high cholesterol, and 72% have high blood pressure. Their average risk score is 0.82, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts William Yu's median patient age at 57, with 58% women.
William Yu's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
William Yu's Medicare patients by sex, 2024
- Women2467%
- Men1233%
Chronic conditions among William Yu's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis58%
- Ischemic heart disease39%
- Osteoporosis33%
Share of Medicare patients with each condition. A patient can have several.
William Yu'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
- Women58%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William Yu wrote 50 Medicare Part D claims in 2024
In 2024, William Yu wrote 50 Medicare Part D claims for 24 patients. 74% of them were for generic drugs.
William Yu's Part D claims by kind of drug, 2024
- Generic37 claims74%
- Brand-name13 claims26%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How William Yu takes part in Medicare
William Yu 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 Yu received $93 in industry payments in 2025
CMS Open Payments shows 2 general payments to William Yu from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. CooperVision Inc. paid the most, $53.
Companies that paid William Yu 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 Yu'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 DataDmand AI Org Hierarchy 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) |
| 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 Yu
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 Yu's NPI number?
William Yu's NPI number is 1164670048. It was assigned on September 3, 2008, and it is active in the NPI Registry.
What does William Yu specialize in?
William Yu is an optometrist in Livermore, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does William Yu practice?
William Yu practices at 6465 National Drive, Livermore, CA 94550. William Yu's primary practice is Acelis Connected Health Services in Livermore, California. Dmand AI also links William Yu to 1 physician office.
What is William Yu's office phone number?
The practice phone on file for William Yu is (877) 262-4669.
What is William Yu's medical license number?
William Yu holds Florida license OPC 4398.
Does William Yu accept Medicare?
Yes. CMS lists William Yu as accepting Medicare assignment.
How many Medicare patients does William Yu see?
CMS counts 36 Medicare patients who saw William Yu in 2024, with an average age of 74.
Has William Yu received payments from drug or device companies?
CMS Open Payments shows $93 in general payments to William Yu from 2 companies from 2025 to 2025. The largest total came from CooperVision Inc.
How long has William Yu been practicing?
William Yu graduated from medical school in 2008, 18 years ago.
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