Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sarah Karp, RD, LDN

Q: What is the NPI number for Sarah Karp?

The National Provider Identifier (NPI) for Sarah Karp is 1578377792, a Type 1 (individual) record in the CMS NPPES registry.

Registered Dietitian in Weymouth, MA · enumerated 2025.

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

National Provider Identifier

1578377792

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Registry record

Entity type Individual (Type 1)

Name Sarah Karp

Credential RD, LDN

Sex Female

Practice address 10213 Avalon Dr, Weymouth, MA, 02188

Phone (781) 864-3886

Enumeration date Feb 6, 2025

Last updated in NPPES Feb 6, 2025

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 4860 (MA) Secondary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 86133226 Primary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD 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

What is the NPI number for Sarah Karp?

The National Provider Identifier (NPI) for Sarah Karp is 1578377792, a Type 1 (individual) record in the CMS NPPES registry.

Where does Sarah Karp practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-06.