NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cheryl Lynn Sommer, ARNP

Family Nurse Practitioner in Chico, CA · enumerated 2006.

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

National Provider Identifier

1255426375

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Cheryl Lynn Sommer
Credential ARNP
Sex Female
Practice address 680 Cohasset Rd, Chico, CA, 95926
Phone (305) 553-8320
Fax (612) 659-7101
Enumeration date Oct 4, 2006
Last updated in NPPES Dec 22, 2016

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License ARNP1805972 (FL) Primary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95001112 (CA) Secondary

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 Cheryl Sommer practice?
The practice location on file with NPPES is in Chico, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Cheryl Sommer?
The National Provider Identifier (NPI) for Cheryl Sommer is 1255426375, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-12-22.