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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael Allen Ruder, M.D.

Cardiovascular Disease Physician in E Palo Alto, CA · enumerated 2006.

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

National Provider Identifier

1679506208

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Registry record

Entity type Individual (Type 1)
Name Michael Allen Ruder
Credential M.D.
Sex Male
Practice address 1950 University Ave, Suite 160, E Palo Alto, CA, 94303
Phone (650) 617-8100
Fax (650) 327-2947
Enumeration date Jul 8, 2006
Last updated in NPPES May 28, 2020

Taxonomy & licenses

207UN0901X Nuclear Cardiology Physician Allopathic & Osteopathic Physicians · License G52891 (CA) Secondary
207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License G52891 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

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Frequently asked questions

How do I verify Michael Ruder's NPI record?
Cross-check NPI 1679506208 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1679506208 active?
Yes, as of the latest NPPES snapshot, NPI 1679506208 is active (record last updated 2020-05-28).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-05-28.