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

Rosemary S Castillo, NP

Individual provider Nurse Practitioner · NPI 1891854519

Rosemary S Castillo, NP is a Nurse Practitioner in Glendora, California. Qualified in 1992, 34 years ago. Practices with Healthcare Partners Affiliates Medical Group, a 790-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
34
Licensed in
CA
In the registry since
2006
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

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Practice location Address checks out

2025 E Route 66
Glendora, CA 91740-4670
Phone: (626) 335-4610
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 9400 Rosecrans Ave, Bellflower, CA 90706-2246 — (562) 461-3000

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence NP6156 (CA)

Record details

NPI number1891854519
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorNo
NPI enumeratedDecember 8, 2006
Last updated in NPPESDecember 7, 2025
Certification dateDecember 7, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 1992 (34 years in practice)
Group practice Healthcare Partners Affiliates Medical Group — 790 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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