Haley F. Castiglione, N.P.
Hematology & Oncology Physician · Los Angeles, CA
Haley F. Castiglione, N.P. is a hematology & oncology physician with a practice address in Los Angeles, California, and NPI 1528148921, issued on Oct 17, 2006. Check the license (California 18656, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Haley F. Castiglione
- Credential
- N.P.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 18656 CA
Self-reported in NPPES; status is on the state search - Practice location
- 757 Westwood Plz, Los Angeles, CA 90095
- Phone
- (310) 825-6301
- Enumerated
- Oct 17, 2006
- Record last updated
- Oct 1, 2025
- Fax
- (310) 825-7473
- Medicaid ID
- 1528148921 CA
- Medicare enrollment
- Enrolled (PECOS I20250922001705); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 757 Westwood Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gihad AbdelhadyStudent in an Organized Health Care Education/Training Program1528760956
- Mohamed Abdelrahim, MDStudent in an Organized Health Care Education/Training Program1699577684
- Ridwa AbdiStudent in an Organized Health Care Education/Training Program1093195208
- Fatemeh Abdollahi Mofakham, MDDiagnostic Radiology Physician1659652915
- Sebiha AbdullahiStudent in an Organized Health Care Education/Training Program1457938235
- Tatiana AbdulnourStudent in an Organized Health Care Education/Training Program1700724648
Verify Haley F. Castiglione in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 18656Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
167 Medicare Part D claims for 44 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Acyclovir13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Haley F. Castiglione among 1,583 hematology & oncology physician records in California
Haley F. Castiglione, N.P. is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 54% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2001 · median 2003 among the 1,124 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Los Angeles → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- David Chang, MDLos Angeles, CA 900951952336737
- Grace Cherry, NPLos Angeles, CA 900951659306447
- Sven De Vos, MDLos Angeles, CA 900951528093713
- Aryeh Edelist, MDLos Angeles, CA 900951437184629
- Christos Emmanouilides, MDLos Angeles, CA 900951780600619
- Nancy Feldman, MDLos Angeles, CA 900951538184700
- Jennifer Gansert, MDLos Angeles, CA 900951811922412
- Patricia Ganz, MDLos Angeles, CA 900951871528471
Common questions
What is Haley F. Castiglione, N.P.'s NPI number?
Haley F. Castiglione, N.P.'s National Provider Identifier (NPI) is 1528148921, issued on Oct 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Haley F. Castiglione, N.P. located?
The NPPES record lists a practice address at 757 Westwood Plz, Los Angeles, CA, 90095. Phone: (310) 825-6301. Providers update this record themselves, so call before visiting.
How can I verify Haley F. Castiglione, N.P.'s license?
NPPES lists California license number 18656, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Haley F. Castiglione, N.P. prescribe under Medicare Part D?
In 2024, Haley F. Castiglione, N.P. had 167 Medicare Part D claims for 44 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.