William Williams, DMD
- Part D claims, 2024
- 45
- Hospital affiliations
- 2
- Industry payments
- $97
- Medical group
- 1
- State license
- 1
- Practice address
- 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598
- Practice phone
- Call (925) 939-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find William Williams' 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 Williams is a dentist in Walnut Creek, California
William Williams practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health.
William Williams' NPI, 1205918331, was assigned on October 19, 2006. William Williams holds North Carolina license 8046.
- NPI
- 1205918331NPI Registry (opens in a new tab)
- NPI enumeration date
- October 19, 2006
- NPI status
- Active
- Practice phone
- (925) 939-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
William Williams practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California
William Williams' primary practice is John Muir Medical Center, Walnut Creek, at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 in Contra Costa County. The practice phone is (925) 939-3000.
- John Muir Medical Center, Walnut Creek1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 · Contra Costa CountyPhone(925) 939-3000
Source: Dmand AI Affiliation Data
William Williams is affiliated with 3 sites of care and 1 medical group
William Williams' primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dmand AI also links William Williams to 1 hospital, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at William Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Williams practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John Muir Medical Center, Walnut Creek | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across John Muir Health and 6.2K+ hospitals, with verified contacts in the same login.
William Williams is one of 6,282 dentists in California
Dentist is William Williams' primary specialty in the NPI Registry, under taxonomy code 122300000X. William Williams is licensed in North Carolina.
Specialties and state licenses
- Dentist, North CarolinaPrimary
Dentists near William Williams
Counts of dentists 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 Williams' patients have a median age of 23
Across all payers, Dmand AI patient panel data puts William Williams' median patient age at 23, with 50% women.
William Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 23
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
William Williams wrote 45 Medicare Part D claims in 2024
In 2024, William Williams wrote 45 Medicare Part D claims for 25 patients. 93% of them were for generic drugs.
William Williams' Part D claims by kind of drug, 2024
- Generic42 claims93%
- Brand-name and other3 claims7%
Drug classes CMS tracks in William Williams' Part D claims, 2024
- Antibiotics47%21 of 45 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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
William Williams received $97 in industry payments in 2025
CMS Open Payments shows 1 general payment to William Williams from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Patterson Companies, Inc. paid the most, $97.
Companies that paid William Williams 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 Williams'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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 Williams
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 Williams' NPI number?
William Williams' NPI number is 1205918331. It was assigned on October 19, 2006, and it is active in the NPI Registry.
What does William Williams specialize in?
William Williams is a dentist in Walnut Creek, California. The primary specialty in the NPI Registry is Dentist (taxonomy code 122300000X).
Where does William Williams practice?
William Williams practices at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598. William Williams' primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dmand AI also links William Williams to 1 hospital, 1 group practice or clinic and 1 medical group.
What is William Williams' office phone number?
The practice phone on file for William Williams is (925) 939-3000.
What is William Williams' medical license number?
William Williams holds North Carolina license 8046.
Which hospitals is William Williams affiliated with?
William Williams practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California. Dmand AI links William Williams to 1 more hospital.
Has William Williams received payments from drug or device companies?
CMS Open Payments shows $97 in general payments to William Williams from 1 company from 2025 to 2025. The largest total came from Patterson Companies, Inc.
How long has William Williams been practicing?
William Williams' NPI was assigned in 2006.
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