Thomas G. Williams, DDS
- Part D claims, 2024
- 44
- Hospital affiliations
- 1
- Industry payments
- $17
- Medical group
- 1
- State license
- 1
- Practice address
- 611 St Joseph Ave, Marshfield, WI 54449
- Practice phone
- Call (715) 387-9963
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Thomas 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.
Thomas G. Williams is a general practice dentistry in Marshfield, Wisconsin
Thomas Williams practices at Marshfield Medical Center - Marshfield in Marshfield, Wisconsin, part of Sanford Health.
Thomas Williams' NPI, 1386607141, was assigned on April 11, 2006. Thomas Williams holds Wisconsin license 3222.
- NPI
- 1386607141NPI Registry (opens in a new tab)
- NPI enumeration date
- April 11, 2006
- NPI status
- Active
- Practice phone
- (715) 387-9963
- 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
Thomas G. Williams practices at Marshfield Medical Center - Marshfield in Marshfield, Wisconsin
Thomas Williams' primary practice is Marshfield Medical Center - Marshfield, at 611 St Joseph Ave, Marshfield, WI 54449 in Wood County. The practice phone is (715) 387-9963.
- Marshfield Medical Center - Marshfield611 St Joseph Ave, Marshfield, WI 54449 · Wood CountyPhone(715) 387-9963
Source: Dmand AI Affiliation Data
Thomas G. Williams is affiliated with 2 sites of care and 1 medical group
Thomas Williams' primary practice is Marshfield Medical Center - Marshfield in Marshfield, Wisconsin, part of Sanford Health. Dmand AI also links Thomas Williams to 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 Thomas G. Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Thomas Williams practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Marshfield Medical Center - Marshfield | Available with a free account |
| +1 more site 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 Sanford Health and 6.2K+ hospitals, with verified contacts in the same login.
Thomas G. Williams is one of 1,140 general practice dentistrys in Wisconsin
General practice is Thomas Williams' primary specialty in the NPI Registry, under taxonomy code 1223G0001X. Thomas Williams is licensed in Wisconsin.
Specialties and state licenses
- General practice dentistry, WisconsinPrimary
General practice dentistrys near Thomas Williams
Counts of general practice dentistrys 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
Thomas G. Williams' patients have a median age of 18
Across all payers, Dmand AI patient panel data puts Thomas Williams' median patient age at 18, with 60% women.
Thomas Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 18
Patient panel by sex, all payers
- Women60%
- Men40%
Source: Dmand AI Patient Panel Data
Thomas G. Williams wrote 44 Medicare Part D claims in 2024
In 2024, Thomas Williams wrote 44 Medicare Part D claims for 31 patients. 100% of them were for generic drugs.
Drug classes CMS tracks in Thomas Williams' Part D claims, 2024
- Antibiotics91%40 of 44 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.
Thomas G. Williams received $17 in industry payments in 2025
CMS Open Payments shows 1 general payment to Thomas Williams from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. GC America Inc. paid the most, $17.
Companies that paid Thomas 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 Thomas G. 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 Thomas G. 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 Thomas G. Williams' NPI number?
Thomas G. Williams' NPI number is 1386607141. It was assigned on April 11, 2006, and it is active in the NPI Registry.
What does Thomas G. Williams specialize in?
Thomas G. Williams is a general practice dentistry in Marshfield, Wisconsin. The primary specialty in the NPI Registry is General Practice Dentistry (taxonomy code 1223G0001X).
Where does Thomas G. Williams practice?
Thomas Williams practices at 611 St Joseph Ave, Marshfield, WI 54449. Thomas Williams' primary practice is Marshfield Medical Center - Marshfield in Marshfield, Wisconsin, part of Sanford Health. Dmand AI also links Thomas Williams to 1 group practice or clinic and 1 medical group.
What is Thomas G. Williams' office phone number?
The practice phone on file for Thomas Williams is (715) 387-9963.
What is Thomas G. Williams' medical license number?
Thomas Williams holds Wisconsin license 3222.
Which hospitals is Thomas G. Williams affiliated with?
Thomas Williams practices at Marshfield Medical Center - Marshfield in Marshfield, Wisconsin.
Has Thomas G. Williams received payments from drug or device companies?
CMS Open Payments shows $17 in general payments to Thomas Williams from 1 company from 2025 to 2025. The largest total came from GC America Inc.
How long has Thomas G. Williams been practicing?
Thomas Williams' NPI was assigned in 2006.
Selling to general practice practices?
See general practice dentistrys in Wisconsin by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card