Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John L Mignone, MD, PHD

Advanced Heart Failure and Transplant Cardiology Physician in Seattle, WA · enumerated 2006.

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

National Provider Identifier

1194834127

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Registry record

Entity type Individual (Type 1)

Name John L Mignone

Credential MD, PHD

Sex Male

Practice address 1600 E Jefferson St Ste 600, Seattle, WA, 98122

Phone (206) 215-4545

Fax (206) 215-4550

Enumeration date Aug 30, 2006

Last updated in NPPES Oct 7, 2020

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD60069013 (WA) Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License MD60069013 (WA) Secondary

207RA0001X Advanced Heart Failure and Transplant Cardiology Physician Allopathic & Osteopathic Physicians · License MD60069013 (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
1194834127	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.

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Frequently asked questions

Is NPI 1194834127 active?

Yes, as of the latest NPPES snapshot, NPI 1194834127 is active (record last updated 2020-10-07).

How do I verify John Mignone's NPI record?

Cross-check NPI 1194834127 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 2020-10-07.