Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Carolyn Kretsch

Family Nurse Practitioner in Berkeley, CA · enumerated 2022.

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

National Provider Identifier

1851052633

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Registry record

Entity type Individual (Type 1)

Name Carolyn Kretsch

Sex Female

Practice address 2441 Curtis St Apt D, Berkeley, CA, 94702

Phone (651) 341-8863

Enumeration date Jan 4, 2022

Last updated in NPPES Jan 4, 2022

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95019514 (CA) Primary

163W00000X Registered Nurse Nursing Service Providers · License 95204483 (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 Carolyn Kretsch practice?

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

What is the NPI number for Carolyn Kretsch?

The National Provider Identifier (NPI) for Carolyn Kretsch is 1851052633, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-04.