Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Barbara C Olendzki, RD, MPH, LDN

Registered Dietitian in Worcester, MA · enumerated 2006.

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

National Provider Identifier

1548338015

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Registry record

Entity type Individual (Type 1)

Name Ms. Barbara C Olendzki

Credential RD, MPH, LDN

Sex Female

Practice address 55 Lake Ave N Bldg Shaw, Umass Medical School, Worcester, MA, 01655

Phone (508) 856-5195

Fax (508) 856-2022

Enumeration date Dec 1, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 236 (MA) Primary

133VN1006X Metabolic Nutrition Registered Dietitian Dietary & Nutritional Service Providers · License 236 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Barbara Olendzki practice?

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

What is the NPI number for Barbara Olendzki?

The National Provider Identifier (NPI) for Barbara Olendzki is 1548338015, 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.