Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sari R Kalin, M.S., R.D., L.D.N.

Nutritionist in Boston, MA · enumerated 2009.

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

National Provider Identifier

1023256088

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Registry record

Entity type Individual (Type 1)

Name Sari R Kalin

Credential M.S., R.D., L.D.N.

Sex Female

Practice address 1601 Washington St, Boston, MA, 02118

Phone (617) 425-2000

Fax (617) 424-8725

Enumeration date Jan 29, 2009

Last updated in NPPES Dec 8, 2011

Taxonomy & licenses

133N00000X Nutritionist Dietary & Nutritional Service Providers · License 2779 (MA) Primary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 2779 (MA) Secondary

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.

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Frequently asked questions

How do I verify Sari Kalin's NPI record?

Cross-check NPI 1023256088 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1023256088 active?

Yes, as of the latest NPPES snapshot, NPI 1023256088 is active (record last updated 2011-12-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-08.