Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sarah Olstyn Martinez, D.O.

Emergency Medicine Physician in Austin, TX · enumerated 2007 · practices at Austin Critical Care Specialists PA.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1063602001

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Registry record

Entity type Individual (Type 1)

Name Sarah Olstyn Martinez

Credential D.O.

Sex Female

Practice address 11113 Research Blvd, Austin, TX, 78759

Phone (512) 324-6010

Enumeration date Jul 26, 2007

Last updated in NPPES Oct 28, 2020

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License N4639 (TX) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
207655601	Medicaid	TX	-
036118906	Medicaid	IL	-
207655602	Medicaid	TX	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1063602001 active?

Yes, as of the latest NPPES snapshot, NPI 1063602001 is active (record last updated 2020-10-28).

How do I verify Sarah Martinez's NPI record?

Cross-check NPI 1063602001 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Hobson Leblanc Family Medicine Physician · Austin, TX NPI 1497733786 Austin Critical Care Specialists PA Critical Care Medicine (Internal Medicine) Physician · Austin, TX NPI 1447435805 Michael Elkins Physician Assistant · Austin, TX NPI 1306089032 Stacie Jempty Speech-Language Pathologist · Austin, TX NPI 1366759136 Lyndsi Meyenburg Pharmacotherapy Pharmacist · Austin, TX NPI 1093072894 Joseph Hemerka Emergency Medicine Physician · Austin, TX NPI 1316205735 Rachel Hirsh Clinical Social Worker · Austin, TX NPI 1215364997 Amar Khunti Family Medicine Physician · Austin, TX NPI 1215347216

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-28.