NPPES file of Aug 9, 2026

Sarah Hallmark

Nurse Practitioner · Austin, TX

Sarah Hallmark is a nurse practitioner with a practice address in Austin, Texas, and NPI 1720811920, issued on Aug 22, 2024. Check the license (Texas 1167631, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1720811920
Name
Sarah Hallmark
Primary taxonomy
Nurse Practitioner 363L00000X
License number
1167631 TX
Self-reported in NPPES; status is on the state search
Practice location
1500 Red River St, Austin, TX 78701
Phone
(512) 324-7000
Enumerated
Aug 22, 2024
Record last updated
Aug 22, 2024
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest nurse practitioner records → All 4,825 in Texas → Look up another NPI →

Also registered at 1500 Red River St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Sara Abdollahi, PA-CPhysician Assistant1710818240
  2. Mohamad AbouelnaajInternal Medicine Physician1497507156
  3. Mark Adkins, RNCritical Care Medicine Registered Nurse1790313963
  4. Joel Adler, M.D., M.P.H.Transplant Surgery Physician1518279199
  5. Daniel Ahle, MDInternal Medicine Physician1922674068
  6. Abdulhamid Al-DouriInternal Medicine Physician1093205197

Verify Sarah Hallmark in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Texas board licenses this profession
    Search for license 1167631    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Industry payments in 2024: $22.25

1 payment: food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Sarah Hallmark$22.25
  2. Specialty average$791.64

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Sarah Hallmark among 4,825 nurse practitioner records in Texas

Sarah Hallmark is one of 4,825 nurse practitioner records with a practice address in Texas. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 88% of them.

  • NPI issued2024 · 88% of these records are older, 8% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileNo · 54% of these records are
  • Record last updated2024 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nurse Practitioner providers in Texas

There are 4,825 nurse practitioner records in Texas.

All 4,825 in Texas → Every provider in Austin → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Tori Clements, AGPCNP-BCAustin, TX 787011902035421
  2. Jessica Davis, R.N., N.P.Austin, TX 787011447563275
  3. Vivian Fischer, ACNPAustin, TX 787011982636817
  4. Catherine Hill, NPAustin, TX 787011699768200
  5. Gretchen Inman, APNAustin, TX 787011902911183
  6. Maria Kind, APNAustin, TX 787011356463244
  7. Kimberly Miller, N.P.Austin, TX 787011952366767
  8. Rebecca MillerAustin, TX 787011134631476

Common questions

What is Sarah Hallmark's NPI number?

Sarah Hallmark's National Provider Identifier (NPI) is 1720811920, issued on Aug 22, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Sarah Hallmark located?

The NPPES record lists a practice address at 1500 Red River St, Austin, TX, 78701. Phone: (512) 324-7000. Providers update this record themselves, so call before visiting.

How can I verify Sarah Hallmark's license?

NPPES lists Texas license number 1167631, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.