NPI Atlas

Sarah Hallmark

Nurse Practitioner in Austin, Texas. NPI 1720811920.

NPI1720811920

Registry record

NPI
1720811920
Profession
Nurse Practitioner (NP)
Specialty
Nurse Practitioner (363L00000X)
Practice address
1500 Red River St
Austin, TX 78701
Phone
5123247000
In the registry since
August 22, 2024
Last NPPES update
August 22, 2024
Sole proprietor
No
License
1167631 (TX)

At this location

36 other providers in our data list 1500 Red River St, Austin as a practice address:

In context

The NPI number of Sarah Hallmark is 1720811920. They are a Nurse Practitioner in Austin, Texas.

Sarah Hallmark is one of 303 Nurse Practitioners in Austin and one of 6,739 across Texas in our data. Austin ranks #4 among Texas cities in our dataset, with 2,782 NP and PA providers.

The NPI has been in the federal registry for 1 year, since August 22, 2024.

Frequently asked questions

What is NPI 1720811920?

NPI 1720811920 is the 10-digit National Provider Identifier assigned to Sarah Hallmark, a Nurse Practitioner practicing in Austin, Texas. The record has been in the NPPES registry since August 22, 2024.

How do I verify this provider?

Cross-check NPI 1720811920 in the official CMS registry at npiregistry.cms.hhs.gov, and confirm license 1167631 with the TX licensing board. You can also run the number through our free NPI validator to confirm its checksum.

Is this information current?

This profile reflects the June 2026 NPPES data file. NPPES lists the record's last update as August 22, 2024. We refresh our data each month when CMS publishes a new file.

Data: NPPES public registry, June 2026 file. Not medical advice. Verify independently before care or credentialing decisions. Errors in the source record can be corrected at nppes.cms.hhs.gov; see our corrections page.