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

Mark Sidney Castillo

Individual provider Mental Health Counselor · NPI 1184845786

Mark Sidney Castillo is a Mental Health Counselor in Greenfield, California. Practices as a sole proprietor. Registered with an NPI since 2007.

In the registry since
2007
Specialties on file
3

Practice location Address checks out

215 Huerta Ave
Greenfield, CA 93927-5762
Phone: (831) 674-2180
Show map & directions

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

Specialties & licences

Counselor (primary) Taxonomy 101Y00000X
Mental Health Counselor Taxonomy 101YM0800X
Case Manager/Care Coordinator Taxonomy 171M00000X

Record details

NPI number1184845786
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedMay 1, 2007
Last updated in NPPESJune 21, 2021
Certification dateJune 21, 2021
Mailing address18225 Hale Ave, Morgan Hill, CA 95037-3547

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