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

Mrs. Michelle Missy Porteous, MS, RD, CDE

Registered Dietitian in Riverside, CA · enumerated 2007.

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

National Provider Identifier

1003967712

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Registry record

Entity type Individual (Type 1)

Name Mrs. Michelle Missy Porteous

Credential MS, RD, CDE

Sex Female

Practice address Riverside, CA, 92505

Phone (951) 317-7657

Fax (951) 278-8665

Enumeration date Jan 16, 2007

Last updated in NPPES Sep 3, 2013

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 814382 (CA) Primary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD credential

Other identifiers

Identifier	Type	State	Issuer
P00962989	Other	CA	RAILROAD MEDICARE

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 Michelle Porteous's NPI record?

Cross-check NPI 1003967712 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1003967712 active?

Yes, as of the latest NPPES snapshot, NPI 1003967712 is active (record last updated 2013-09-03).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-09-03.