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

Mrs. Karen Rothschild-Dunst, CRNA

Certified Registered Nurse Anesthetist in Fontana, CA · enumerated 2007.

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

National Provider Identifier

1154529550

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Registry record

Entity type Individual (Type 1)

Name Mrs. Karen Rothschild-Dunst

Credential CRNA

Sex Female

Practice address Fontana, CA, 92335

Phone (909) 427-7162

Enumeration date Jul 6, 2007

Last updated in NPPES Oct 23, 2021

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 1149 (CA) 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

How do I verify Karen Rothschild-Dunst's NPI record?

Cross-check NPI 1154529550 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1154529550 active?

Yes, as of the latest NPPES snapshot, NPI 1154529550 is active (record last updated 2021-10-23).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-23.