Haley Castiglione, N.P.
NPI 1528148921 · Hematology & Oncology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Haley Castiglione, N.P. is a Hematology & Oncology Physician provider in Los Angeles, CA (NPI 1528148921).
Provider details
- NPI number
- 1528148921
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- 18656 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Acyclovir | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-17
- Last updated
- 2025-10-01
- Certified
- 2025-10-01
Frequently asked questions
- What is Haley Castiglione's NPI number?
- Haley Castiglione's National Provider Identifier (NPI) is 1528148921, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Haley Castiglione's specialty?
- Haley Castiglione is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Haley Castiglione located?
- Haley Castiglione's practice location on file with NPPES is 757 Westwood Plz, Los Angeles, CA 90095-8358.
- What is Haley Castiglione's phone number?
- The practice phone number listed in the NPPES registry for Haley Castiglione is (310) 825-6301.
- Does Haley Castiglione accept Medicare?
- Haley Castiglione is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Haley Castiglione's NPI active?
- Yes — Haley Castiglione's NPI (1528148921) is active in the NPPES registry as of the last update on 2025-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.