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Fernando Ernesto Casado Castillo, M.D.

Infectious Disease Physician in Renton, WA · enumerated 2016.

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

National Provider Identifier

1528411774

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Registry record

Entity type Individual (Type 1)
Name Fernando Ernesto Casado Castillo
Credential M.D.
Sex Male
Practice address 4033 Talbot Rd S Ste 570, Renton, WA, 98055
Phone (425) 690-3487
Fax (425) 690-9087
Enumeration date Jul 22, 2016
Last updated in NPPES Mar 28, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD61417522 (WA) Secondary
207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License MD-45957 (IA) Secondary
207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 74676 (WI) Secondary
207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License MD61417522 (WA) 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

What is the NPI number for Fernando Casado Castillo?
The National Provider Identifier (NPI) for Fernando Casado Castillo is 1528411774, a Type 1 (individual) record in the CMS NPPES registry.
Where does Fernando Casado Castillo practice?
The practice location on file with NPPES is in Renton, WA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-28.