Sarah Hallmark
- Hospital affiliations
- 1
- Industry payments
- $25
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2024
- Practice address
- 601 E 15th Street, Austin, TX 78701
- Practice phone
- Call (512) 324-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Sarah Hallmark'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.
Sarah Hallmark is a nurse practitioner in Austin, Texas
Sarah Hallmark practices at Dell Seton Medical Center at The University of Texas in Austin, Texas, part of Ascension Health Alliance.
Sarah Hallmark's NPI, 1720811920, was assigned on August 22, 2024. Sarah Hallmark holds Texas license 1167631.
- NPI
- 1720811920NPI Registry (opens in a new tab)
- NPI enumeration date
- August 22, 2024
- NPI status
- Active
- Practice phone
- (512) 324-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Sarah Hallmark practices at 2 locations in Austin, Texas
Sarah Hallmark's primary practice is Dell Seton Medical Center at the University of Texas, at 601 E 15th Street, Austin, TX 78701 in Travis County. The practice phone is (512) 324-7000. The NPI Registry lists Sarah Hallmark's practice address as 1500 Red River St, Austin, TX 78701.
- Dell Seton Medical Center at the University of TexasPrimary601 E 15th Street, Austin, TX 78701 · Travis CountyPhone(512) 324-7000
- NPI Registry address1500 Red River St, Austin, TX 78701
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Sarah Hallmark is affiliated with 1 site of care and 1 medical group
Sarah Hallmark's primary practice is Dell Seton Medical Center at The University of Texas in Austin, Texas, part of Ascension Health Alliance. The medical group on file is Seton Family of Doctors.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Sarah Hallmark's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Sarah Hallmark practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dell Seton Medical Center at The University of Texas | 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 Ascension Health Alliance and 6.2K+ hospitals, with verified contacts in the same login.
Sarah Hallmark is one of 3,565 nurse practitioners in Texas
Nurse practitioner is Sarah Hallmark's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Sarah Hallmark is licensed in Texas.
Specialties and state licenses
- Nurse practitioner, TexasPrimary
Nurse practitioners near Sarah Hallmark
Counts of nurse practitioners 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
Sarah Hallmark's patients have a median age of 45
Across all payers, Dmand AI patient panel data puts Sarah Hallmark's median patient age at 45, with 54% women.
Sarah Hallmark's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 45
Patient panel by sex, all payers
- Women54%
- Men43%
Source: Dmand AI Patient Panel Data
Sarah Hallmark received $25 in industry payments in 2025
CMS Open Payments shows 1 general payment to Sarah Hallmark from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Core Surgical Group paid the most, $25.
Companies that paid Sarah Hallmark 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 Sarah Hallmark'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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 Sarah Hallmark
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Sarah Hallmark's NPI number?
Sarah Hallmark's NPI number is 1720811920. It was assigned on August 22, 2024, and it is active in the NPI Registry.
What does Sarah Hallmark specialize in?
Sarah Hallmark is a nurse practitioner in Austin, Texas. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Sarah Hallmark practice?
Sarah Hallmark practices at 601 E 15th Street, Austin, TX 78701. Sarah Hallmark also practices at 1500 Red River St, Austin, TX 78701. Sarah Hallmark's primary practice is Dell Seton Medical Center at The University of Texas in Austin, Texas, part of Ascension Health Alliance.
What is Sarah Hallmark's office phone number?
The practice phone on file for Sarah Hallmark is (512) 324-7000.
What is Sarah Hallmark's medical license number?
Sarah Hallmark holds Texas license 1167631.
Which hospitals is Sarah Hallmark affiliated with?
Sarah Hallmark practices at Dell Seton Medical Center at The University of Texas in Austin, Texas.
What medical group is Sarah Hallmark part of?
Sarah Hallmark is linked to Seton Family of Doctors.
Has Sarah Hallmark received payments from drug or device companies?
CMS Open Payments shows $25 in general payments to Sarah Hallmark from 1 company from 2025 to 2025. The largest total came from Core Surgical Group.
How long has Sarah Hallmark been practicing?
Sarah Hallmark's NPI was assigned in 2024.
Selling to nurse practitioner practices?
See nurse practitioners in Texas 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