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

Clarissa London, R.A., L.D./N, L.D.

Registered Dietitian in Norwood, MA · enumerated 2009.

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

National Provider Identifier

1598095390

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Registry record

Entity type Individual (Type 1)

Name Clarissa London

Credential R.A., L.D./N, L.D.

Sex Female

Practice address Norwood, MA, 02062

Phone (781) 762-6944

Fax (781) 762-6189

Enumeration date Dec 30, 2009

Last updated in NPPES Dec 30, 2009

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 425 (MA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Clarissa London?

The National Provider Identifier (NPI) for Clarissa London is 1598095390, a Type 1 (individual) record in the CMS NPPES registry.

Where does Clarissa London practice?

The practice location on file with NPPES is in Norwood, 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 2009-12-30.