Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Julie Castner, PA

Physician Assistant in Rocklin, CA · enumerated 2018.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1508357435

Verified

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Registry record

Entity type Individual (Type 1)

Name Julie Castner

Credential PA

Sex Female

Practice address 3104 Sunset Blvd Ste 2b, Rocklin, CA, 95677

Phone (916) 624-0300

Enumeration date May 26, 2018

Last updated in NPPES Oct 18, 2023

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA56505 (CA) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Julie Castner practice?

The practice location on file with NPPES is in Rocklin, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Julie Castner?

The National Provider Identifier (NPI) for Julie Castner is 1508357435, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Kuo Ooi Internal Medicine Physician · Rocklin, CA NPI 1598775421 Biljinder Chima Sports Medicine (Family Medicine) Physician · Rocklin, CA NPI 1205084910 Saie Yoin Choi Sports Medicine (Family Medicine) Physician · Rocklin, CA NPI 1073116356 Michelle Thuy Vi Do Family Medicine Physician · Rocklin, CA NPI 1922680537 Michelle Geerts Physician Assistant · Rocklin, CA NPI 1396415188 Stephanie Mccullough Physician Assistant · Rocklin, CA NPI 1497500995 Alisha Mortenson Medical Physician Assistant · Rocklin, CA NPI 1134923238 Jared Schmidt Family Nurse Practitioner · Rocklin, CA NPI 1124996467

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-18.