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SARAH HALLMARK
NPI 1720811920
Nurse Practitioner in Austin, TX

Active since August 22, 2024PECOS Enrolled
1500 RED RIVER ST, AUSTIN, TX 78701(512) 324-7000 Get Directions Write a Review

NPPES record last updated: August 22, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Sarah Hallmark NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SARAH HALLMARK (NPI 1720811920) is an individual nurse practitioner in Austin, Texas, licensed in Texas (1167631) and active in the NPI registry since August 2024. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1720811920
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameSARAH HALLMARK
Location Address1500 RED RIVER STAustin, TX 78701-1918
Mailing Address8001 Mellencamp DrAustin, TX 78744-2099 · (806) 433-9330
Phone(512) 324-7000
Sole ProprietorNo
Enumeration DateAugust 22, 2024
NPPES CertifiedAugust 22, 2024
✔ NPI 1720811920 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in TX · 1167631
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
1500 RED RIVER ST, Austin, TX 78701
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sarah Hallmark is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Sarah Hallmark reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Seton Family Of Doctors
0.1 mi
Neurological Surgery
1601 TRINITY ST STOP 704
Austin, TX 78712
  • Reassigned Medicare billing, Texas enrollment
  • 1,188 clinicians in this Medicare group
NPI 1588997233 (512) 324-8300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78701 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$89.03 typical visit price
range $57.88 – $174.00
Typical copayment $22.25 (range $14.47 – $43.50)
Most-billed visit code 99203
Established Patient
$101.65 typical visit price
range $18.88 – $142.23
Typical copayment $25.41 (range $4.72 – $35.55)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KIRA ALLISON DO
Psychiatry & Neurology (Neurology)
1500 RED RIVER ST
AUSTIN, TX 78701
Travis County (512) 495-5555
DR. JOSEPH DONALD WEBB II PHARMD
Pharmacist
1500 RED RIVER ST
AUSTIN, TX 78701
Travis County (512) 324-7000
KATHERINE ANNE WILCOXSON FNP-C
Nurse Practitioner (Family)
1500 RED RIVER ST
AUSTIN, TX 78701
Travis County (512) 324-7000
SAINI KETHIREDDY MD
Psychiatry & Neurology (Neurology)
1500 RED RIVER ST
AUSTIN, TX 78701
Travis County (512) 495-5555
CHRISTINA SHIELDS MD
Surgery
1500 RED RIVER ST
AUSTIN, TX 78701
Travis County (512) 495-5555
DANE CHRISTOPHER SALE MD
Emergency Medicine
1500 RED RIVER ST
AUSTIN, TX 78701
Travis County (512) 324-8221
JEFFREY CLAY CARROLL JR.
Psychiatry & Neurology (Psychiatry)
1500 RED RIVER ST
AUSTIN, TX 78701
Travis County (512) 324-7000
SYDNEY DEPIES PA-C
Physician Assistant
1500 RED RIVER ST
AUSTIN, TX 78701
Travis County (512) 324-7000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Sarah Hallmark's NPI number?

The NPI number for Sarah Hallmark is 1720811920. It was assigned to this individual provider in the NPPES registry on August 22, 2024.

Where is Sarah Hallmark located?

Sarah Hallmark practices at 1500 Red River St, Austin, TX 78701. The listed phone number is (512) 324-7000.

What is Sarah Hallmark's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Sarah Hallmark enrolled in Medicare?

Yes. Sarah Hallmark is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Sarah Hallmark's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sarah Hallmark reassigns Medicare benefits to Seton Family Of Doctors (Austin, TX). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sarah Hallmark's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sarah Hallmark accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 4 other insurers list Sarah Hallmark as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Sarah Hallmark was last updated on August 22, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.