Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Mariel Castillo, MD

Individual provider Pediatrics Physician · NPI 1326139700

Dr. Mariel Castillo, MD is a Pediatrics Physician in Mount Vernon, Washington. Licensed in Washington. Registered with an NPI since 2006.

Licensed in
WA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

2320 Freeway Dr
Mount Vernon, WA 98273-5445
Phone: (360) 814-6870
Fax: (360) 814-6871
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence MD60091777 (WA)

Record details

NPI number1326139700
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 28, 2006
Last updated in NPPESMarch 29, 2018
Mailing address1400 E. Kincaid Street, Mount Vernon, WA 98274-4127

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