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Dr. Margaret T Marshall, M.D.

Emergency Medicine Physician in Encinitas, CA · enumerated 2005.

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

National Provider Identifier

1639170475

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Registry record

Entity type Individual (Type 1)
Name Dr. Margaret T Marshall
Credential M.D.
Sex Female
Practice address 354 Santa Fe Dr, Encinitas, CA, 92024
Phone (760) 230-2251
Enumeration date Aug 2, 2005
Last updated in NPPES Nov 25, 2009

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License A87417 (CA) 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
00A874170 Medicaid CA -

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

Is NPI 1639170475 active?
Yes, as of the latest NPPES snapshot, NPI 1639170475 is active (record last updated 2009-11-25).
How do I verify Margaret Marshall's NPI record?
Cross-check NPI 1639170475 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 2009-11-25.