Aileen Castillo, NP
NPI 1265659056 · Family Nurse Practitioner · Los Angeles, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Aileen Castillo, NP is a Family Nurse Practitioner provider in Los Angeles, CA (NPI 1265659056).
Provider details
- NPI number
- 1265659056
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- NP11929 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
448 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 190 | $6 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 103 | $118 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 41 | $33 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 36 | $54 |
| Destruction of Skin Growth, 1-14 Growths17110 | 30 | $106 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 72 | 49 |
| Ketoconazole | 28 | 12 |
| Imiquimod | 20 | 12 |
| Prednisone | 19 | — |
| Apremilastbrand: Otezla | 18 | — |
| Doxycycline Monohydrate | 17 | — |
| Clindamycin Phosphate | 16 | — |
| Roflumilastbrand: Zoryve |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$833 across 28 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is Aileen Castillo's NPI number?
- Aileen Castillo's National Provider Identifier (NPI) is 1265659056, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aileen Castillo's specialty?
- Aileen Castillo is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Aileen Castillo located?
- Aileen Castillo's practice location on file with NPPES is 221 Westwood Plz, Los Angeles, CA 90095-0001.
- What is Aileen Castillo's phone number?
- The practice phone number listed in the NPPES registry for Aileen Castillo is (310) 794-7899.
- Does Aileen Castillo accept Medicare?
- Aileen Castillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Aileen Castillo's NPI active?
- Yes — Aileen Castillo's NPI (1265659056) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.