HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / CA

FRANK P CASTILLO JR., NP

NURSE PRACTITIONER

Graduated: 2016

Offers telehealth

NPI: 1639623770

Practice Locations (1)

JOHN MUIR PHYSICIAN NETWORK

100 N WIGET LN, SUITE 290

WALNUT CREEK, CA 945985901

9259377740

Source: CMS National Downloadable File, September 2026.

FRANK CASTILLO, NP | HealthCareAtlasUSA