Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stewart Williams, RD, CSG, LD

Registered Dietitian in Healdsburg, CA · enumerated 2017.

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

National Provider Identifier

1710426762

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Registry record

Entity type Individual (Type 1)

Name Stewart Williams

Credential RD, CSG, LD

Sex Male

Practice address 1375 University St, Healdsburg, CA, 95448

Phone (707) 431-6426

Enumeration date Feb 22, 2017

Last updated in NPPES Feb 22, 2017

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 1046940 Primary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License DT82204 (TX) 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

What is the NPI number for Stewart Williams?

The National Provider Identifier (NPI) for Stewart Williams is 1710426762, a Type 1 (individual) record in the CMS NPPES registry.

Where does Stewart Williams practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-02-22.