Individual provider · Type 1 NPI

Frank Castillo Jr., NP

Nurse Practitioner · Walnut Creek, CA

NPI number 1639623770 Active

Practice location

100 N Wiget Ln Ste 290
Walnut Creek, CA 94598-5901

Call (925) 937-7740 Map

Mailing address

1450 Treat Blvd Ste 300
Walnut Creek, CA 94597-2168

Specialties and licenses

Taxonomy	Code	License
Acute Care Nurse Practitioner	363LA2100X	95004634 (CA)
Nurse Practitioner Primary	363L00000X	95004634 (CA)

Nurse Practitioner: (1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance wit…

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About NPI 1639623770

Frank Castillo Jr., NP's National Provider Identifier is 1639623770, issued on Aug 5, 2016. The primary taxonomy on file is Nurse Practitioner (363L00000X), and the practice location is in Walnut Creek, CA. The record was last updated on Sep 22, 2025.