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

Stefanie Anne O'Connor, MS, RD, LDN

Registered Dietitian in Roslindale, MA · enumerated 2015.

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

National Provider Identifier

1164816708

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Stefanie Anne O'Connor

Credential MS, RD, LDN

Sex Female

Practice address Roslindale, MA, 02131

Phone (617) 699-1988

Enumeration date Mar 21, 2015

Last updated in NPPES Jul 22, 2015

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 3375 (MA) 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 Stefanie O'Connor?

The National Provider Identifier (NPI) for Stefanie O'Connor is 1164816708, a Type 1 (individual) record in the CMS NPPES registry.

Where does Stefanie O'Connor practice?

The practice location on file with NPPES is in Roslindale, 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 2015-07-22.