Jack B. Siegrist Jr., DDS
- Part D claims, 2024
- 52
- Industry payments
- $157
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 5205 N O'Connor Blvd, Irving, TX 75039
- Practice phone
- Call (972) 556-2122
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Williams Square Dental
Physician office · Irving, Texas
Find Jack Siegrist'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.
Jack B. Siegrist Jr. is a general practice dentistry in Grapevine, Texas
Jack Siegrist practices at Williams Square Dental in Irving, Texas.
Jack Siegrist's NPI, 1457484461, was assigned on March 13, 2007. Jack Siegrist holds Texas license 9950.
- NPI
- 1457484461NPI Registry (opens in a new tab)
- NPI enumeration date
- March 13, 2007
- NPI status
- Active
- Practice phone
- (972) 556-2122
- 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
Jack B. Siegrist Jr. practices in Irving and Grapevine
Jack Siegrist's primary practice is Williams Square Dental, at 5205 N O'Connor Blvd, Irving, TX 75039. The practice phone is (972) 556-2122. The NPI Registry lists Jack Siegrist's practice address as 3801 William D Tate Ave, Grapevine, TX 76051.
- Williams Square DentalPrimary5205 N O'Connor Blvd, Irving, TX 75039Phone(972) 556-2122
- NPI Registry address3801 William D Tate Ave, Grapevine, TX 76051 · Tarrant County
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Jack B. Siegrist Jr. is affiliated with 1 site of care
Jack Siegrist's primary practice is Williams Square Dental in Irving, Texas.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Jack B. Siegrist Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Jack Siegrist practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Williams Square Dental | Available with a free account |
Source: Dmand AI Technology Install Data
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Jack B. Siegrist Jr. is one of 4,300 general practice dentistrys in Texas
General practice is Jack Siegrist's primary specialty in the NPI Registry, under taxonomy code 1223G0001X. Jack Siegrist is licensed in Texas.
Specialties and state licenses
- General practice dentistry, TexasPrimary
General practice dentistrys near Jack Siegrist
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
Jack B. Siegrist Jr.'s patients have a median age of 36
Across all payers, Dmand AI patient panel data puts Jack Siegrist's median patient age at 36, with 100% women.
Jack Siegrist's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 36
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Jack B. Siegrist Jr. wrote 52 Medicare Part D claims in 2024
In 2024, Jack Siegrist wrote 52 Medicare Part D claims for 36 patients. 96% of them were for generic drugs.
Jack Siegrist's Part D claims by kind of drug, 2024
- Generic50 claims96%
- Brand-name and other2 claims4%
Drug classes CMS tracks in Jack Siegrist's Part D claims, 2024
- Antibiotics90%47 of 52 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
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Jack B. Siegrist Jr. received $157 in industry payments in 2025
CMS Open Payments shows 7 general payments to Jack Siegrist from 5 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Envista Holdings Corporation paid the most, $75.
Companies that paid Jack Siegrist 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 Jack B. Siegrist Jr.'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation 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 Jack B. Siegrist Jr.
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Jack B. Siegrist Jr.'s NPI number?
Jack B. Siegrist Jr.'s NPI number is 1457484461. It was assigned on March 13, 2007, and it is active in the NPI Registry.
What does Jack B. Siegrist Jr. specialize in?
Jack B. Siegrist Jr. is a general practice dentistry in Grapevine, Texas. The primary specialty in the NPI Registry is General Practice Dentistry (taxonomy code 1223G0001X).
Where does Jack B. Siegrist Jr. practice?
Jack Siegrist practices at 5205 N O'Connor Blvd, Irving, TX 75039. Jack Siegrist also practices at 3801 William D Tate Ave, Grapevine, TX 76051. Jack Siegrist's primary practice is Williams Square Dental in Irving, Texas.
What is Jack B. Siegrist Jr.'s office phone number?
The practice phone on file for Jack Siegrist is (972) 556-2122.
What is Jack B. Siegrist Jr.'s medical license number?
Jack Siegrist holds Texas license 9950.
Has Jack B. Siegrist Jr. received payments from drug or device companies?
CMS Open Payments shows $157 in general payments to Jack Siegrist from 5 companies from 2025 to 2025. The largest total came from Envista Holdings Corporation.
How long has Jack B. Siegrist Jr. been practicing?
Jack Siegrist's NPI was assigned in 2007.
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