Leonard Sender, MD
NPI 1952499741 · Pediatric Hematology & Oncology Physician · El Segundo, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leonard Sender, MD is a Pediatric Hematology & Oncology Physician provider in El Segundo, CA (NPI 1952499741).
Provider details
- NPI number
- 1952499741
- Entity type
- Individual
- Primary specialty
- Pediatric Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A41293 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
2 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (1)
- 455 S Main StOrange, CA 92868-3835Phone: (714) 532-8636Fax: (714) 532-8699
Registry dates
- Enumerated
- 2006-10-10
- Last updated
- 2018-10-01
Frequently asked questions
- What is Leonard Sender's NPI number?
- Leonard Sender's National Provider Identifier (NPI) is 1952499741, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Sender's specialty?
- Leonard Sender is listed in the NPPES registry with a primary specialty of Pediatric Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Sender located?
- Leonard Sender's practice location on file with NPPES is 2040 E Mariposa Ave, El Segundo, CA 90245.
- What is Leonard Sender's phone number?
- The practice phone number listed in the NPPES registry for Leonard Sender is (213) 266-5600.
- Does Leonard Sender accept Medicare?
- Leonard Sender is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leonard Sender's NPI active?
- Yes — Leonard Sender's NPI (1952499741) is active in the NPPES registry as of the last update on 2018-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.