Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Thomas Onstott, CRNA, DNP

Certified Registered Nurse Anesthetist in San Antonio, TX · enumerated 2015 · practices at University of Texas Health Science Center at San Antonio.

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

National Provider Identifier

1851767529

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Onstott

Credential CRNA, DNP

Sex Male

Practice address San Antonio, TX, 78249

Phone (210) 567-9100

Fax (210) 450-2165

Enumeration date Aug 18, 2015

Last updated in NPPES Sep 12, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License AP144007 (TX) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 20204 (TN) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

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 1851767529 active?

Yes, as of the latest NPPES snapshot, NPI 1851767529 is active (record last updated 2024-09-12).

How do I verify Thomas Onstott's NPI record?

Cross-check NPI 1851767529 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-12.