Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Claudia L Peterson, CRNA

Certified Registered Nurse Anesthetist in Lake Geneva, WI · enumerated 2006.

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

National Provider Identifier

1265440838

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Ms. Claudia L Peterson

Credential CRNA

Sex Female

Practice address 146 E Geneva Sq, Lake Geneva, WI, 53147

Phone (877) 666-7223

Enumeration date Aug 3, 2006

Last updated in NPPES Apr 6, 2021

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 5378-33 (WI) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 5378-33 (WI) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 8463-33 (WI) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 041178474 (IL) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 209003080 (IL) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 141089-30 (WI) 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 Claudia Peterson's NPI record?

Cross-check NPI 1265440838 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1265440838 active?

Yes, as of the latest NPPES snapshot, NPI 1265440838 is active (record last updated 2021-04-06).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-06.