NPI Portal NPI Lookup & Verification

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

Jamie M Leff, MSRD

Registered Dietitian in Newbury Park, CA · enumerated 2008.

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

National Provider Identifier

1013195585

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Registry record

Entity type Individual (Type 1)
Name Jamie M Leff
Credential MSRD
Sex Female
Practice address Newbury Park, CA, 91320
Phone (818) 207-5803
Enumeration date Feb 6, 2008
Last updated in NPPES Sep 11, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 927733 (CA) Primary

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.

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Frequently asked questions

Where does Jamie Leff practice?
The practice location on file with NPPES is in Newbury Park, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jamie Leff?
The National Provider Identifier (NPI) for Jamie Leff is 1013195585, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.