Frank Castillo Jr. is a Walnut Creek, California based nurse practitioner who is specialized as Acute Care nurse. Active license number of Frank Castillo Jr. is 95004634 in California. His current practice location is 100 N Wiget Ln Ste 290, Walnut Creek. Patients can reach him at 925-937-7740. Frank Castillo Jr. is NP with specialization in Acute Care and his NPI number (Unique professional ID assigned by NPPES) is 1639623770. Frank Castillo Jr. is a licensed independent practitioner and may autonomously provide care. He provides advanced nursing care across the continuum of health care services to meet the specialized physiologic and psychological needs of patients with acute, critical, and/or complex chronic health conditions. This care is continuous and comprehensive and may be provided in any setting where the patient may be found.
Complete Profile:
Frank Castillo Jr. speciality, credentials, practice address, contact phone number and fax are as below.
Patients can call on the below given phone number for appointment.
Name:
Frank Castillo Jr.
Specialization:
Acute Care Nurse Practitioner (ACNP)
Gender:
Male
Credentials:
NP
Practice Address:
100 N Wiget Ln Ste 290, Walnut Creek, California, 94598-5901
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS).
NPI details are as mentioned below.
NPI Number:
1639623770
NPI Enumeration Date:
05 Aug, 2016
NPI Last Update On:
22 Sep, 2025
Medical Licenses:
NPs can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Frank Castillo Jr. are as mentioned below.
License Number
Specialization
State
Status
95004634
California
Primary
95004634
Acute Care
California
Secondary
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
Address:
Frank Castillo Jr. 1450 Treat Blvd Ste 300, Walnut Creek, California
Zip:
94597-2168
Phone Number:
925-952-2828
Patients can reach Frank Castillo Jr. at 100 N Wiget Ln Ste 290, Walnut Creek, California or can call to book an appointment on 925-937-7740.
Comments/ Reviews:
Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 13 October, 2025.