ROSEMARY S CASTILLO NP
NPI 1891854519
Nurse Practitioner in Glendora, CA

Active since December 08, 2006PECOS EnrolledAccepts Medicare Assignment
2025 E ROUTE 66, GLENDORA, CA 91740(626) 335-4610 Get Directions Write a Review

NPPES record last updated: December 7, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Rosemary S Castillo Np NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ROSEMARY S CASTILLO NP (NPI 1891854519) is an individual nurse practitioner in Glendora, California, licensed in California (NP6156) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS, maintains a secondary practice location in Bellflower, and is a graduate of Other (1992).

NPPES Registry Identity

NPI1891854519
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameROSEMARY S CASTILLOCredential: NP
Location Address2025 E ROUTE 66Glendora, CA 91740-4670
Mailing AddressPo Box 35380Las Vegas, NV 89133-5380 · (702) 579-3203
Sole ProprietorNo
Medical School CMSOtherGraduated 1992
Enumeration DateDecember 8, 2006
Last NPPES UpdateDecember 7, 2025
NPPES CertifiedDecember 7, 2025
NPI 1891854519 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License Licensed in CA · NP6156
Definition

(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 with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

2025 E ROUTE 66, Glendora, CA 91740

Secondary Practice Location 1

Location 19400 Rosecrans AveBellflower, CA 90706-2246 · Phone (562) 461-3000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Rosemary S Castillo Np is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5092858274
PECOS Enrollment IDI20100210000575
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit, 20-29 minutes 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
40 services32 patients
Telephone medical discussion with physician, 11-20 minutes 99442
This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.
16 services13 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
13 services13 patients
Annual depression screening, 15 minutes G0444
An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91740 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 14

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Pediatrics
2025 E ROUTE 66
GLENDORA, CA 91740
Family Medicine
2025 E ROUTE 66
GLENDORA, CA 91740
Internal Medicine
2025 E ROUTE 66
GLENDORA, CA 91740
Pediatrics
2025 E ROUTE 66
GLENDORA, CA 91740
Pediatrics
2025 E ROUTE 66
GLENDORA, CA 91740
Non-Pharmacy Dispensing Site
2025 E ROUTE 66
GLENDORA, CA 91740
Internal Medicine
2025 E ROUTE 66
GLENDORA, CA 91740
Family Medicine
2025 E ROUTE 66
GLENDORA, CA 91740

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1891854519, enumerated as an "individual" on December 08, 2006.

The provider is located at 2025 E ROUTE 66 GLENDORA, CA 91740 and the phone number is (626) 335-4610.

Nurse Practitioner with taxonomy code 363L00000X.