Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Claire K Farren, CRNA

Certified Registered Nurse Anesthetist in Evanston, IL · enumerated 2010.

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

National Provider Identifier

1790001873

Verified

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Registry record

Entity type Individual (Type 1)

Name Ms. Claire K Farren

Credential CRNA

Sex Female

Practice address 2650 Ridge Ave, Department of Anethesia, Evanston, IL, 60201

Phone (847) 570-2760

Fax (847) 570-2921

Enumeration date Apr 14, 2010

Last updated in NPPES Jan 27, 2026

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 209010579 (IL) Primary

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

Other identifiers

Identifier	Type	State	Issuer
600420030	Medicaid	MO	-

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

Where does Claire Farren practice?

The practice location on file with NPPES is in Evanston, IL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Claire Farren?

The National Provider Identifier (NPI) for Claire Farren is 1790001873, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-27.