Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert B. Stewart, MD

Cardiovascular Disease Physician in Mount Vernon, WA · enumerated 2006.

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

National Provider Identifier

1578599445

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Registry record

Entity type Individual (Type 1)

Name Robert B. Stewart

Credential MD

Sex Male

Practice address 307 S. 13th St.,, Suite 300, Mount Vernon, WA, 98274

Phone (360) 336-9757

Fax (360) 336-2088

Enumeration date Jun 23, 2006

Last updated in NPPES Oct 5, 2012

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MD00028275 (WA) Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License MD00028275 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
8146938	Medicaid	WA	-

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

Is NPI 1578599445 active?

Yes, as of the latest NPPES snapshot, NPI 1578599445 is active (record last updated 2012-10-05).

How do I verify Robert Stewart's NPI record?

Cross-check NPI 1578599445 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-05.