Dr. Leonard S. Sender, MD
- Medicare services, 2016
- 36
- Part D claims, 2016
- 25
- Publications
- 79
- Clinical trials
- 6
- Industry payments
- $9,160
- Practice address
- 1640 Newport Blvd, Costa Mesa, CA 92627
- Practice phone
- Call (949) 309-3330
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
American Surgical Center-OC
Costa Mesa, California
Find Dr. Sender's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Leonard S. Sender is a pediatric hematology and oncology physician in Costa Mesa, California
Dr. Sender practices at American Surgical Center-OC in Costa Mesa, California.
Dr. Sender's NPI, 1952499741, was assigned on October 10, 2006. Dr. Sender graduated from University of the Witwatersrand in 1982. Dr. Sender holds California license A41293.
- NPI
- 1952499741NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789579590
- NPI enumeration date
- October 10, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (949) 309-3330
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Leonard S. Sender practices at American Surgical Center-OC in Costa Mesa, California
Dr. Sender's primary practice is American Surgical Center-OC, at 1640 Newport Blvd, Costa Mesa, CA 92627 in Orange County. The practice phone is (949) 309-3330.
- American Surgical Center-OC1640 Newport Blvd, Costa Mesa, CA 92627 · Orange CountyPhone(949) 309-3330
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Leonard S. Sender is affiliated with 2 sites of care and 1 medical group
Dr. Sender's primary practice is American Surgical Center-OC in Costa Mesa, California. The medical group on file is Chan Soon-Shiong Institute for Medicine. Dmand AI also links Dr. Sender to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Leonard S. Sender's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sender practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| American Surgical Center-OC | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Leonard S. Sender is one of 385 pediatric hematologys and oncology physicians in California
Pediatric hematology-oncology is Dr. Sender's primary specialty in the NPI Registry, under taxonomy code 2080P0207X. Dr. Sender is board certified in pediatrics by the American Board of Pediatrics. Dr. Sender is licensed in California.
Specialties and state licenses
- Pediatric hematology and oncology, CaliforniaPrimary
Pediatric hematologys and oncology physicians near Dr. Sender
Counts of pediatric hematologys and oncology physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Leonard S. Sender billed Medicare for 36 services in 2016
CMS data shows 36 Medicare services from Dr. Sender across 2 procedure codes in 2016. Medicare paid $3,070 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Sender compared with the California median for pediatric hematologys and oncology physicians, 2016
- Dr. Sender
- California median
- Medicare services
- 36vs 4622% below
- Part D claims
- 25vs 1392% above
Medians across 52 pediatric hematologys and oncology physicians in California with Dmand AI profiles that report each measure.
Dr. Sender's most billed Medicare procedure codes, 2016
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sender and other pediatric hematologys and oncology physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Leonard S. Sender's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Sender's median patient age at 65, with 40% women.
Dr. Sender's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women40%
- Men57%
Source: Dmand AI Patient Panel Data
Dr. Leonard S. Sender wrote 25 Medicare Part D claims in 2016
In 2016, Dr. Sender wrote 25 Medicare Part D claims. They cover 2 drugs, with $143,852 in total drug cost.
Dr. Sender's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Leonard S. Sender takes part in Medicare
Dr. Sender accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Leonard S. Sender has 79 publications on record
Dmand AI links 79 papers to Dr. Sender, published from 2009 to 2022. 2016 was the busiest year, with 11. The most frequent topics are Fetal Blood, Precursor Cell Lymphoblastic Leukemia-Lymphoma and Antineoplastic Agents. Dr. Sender has published most often in J Adolesc Young Adult Oncol. Dr. Sender's most frequent co-authors are Mitchell S. Cairo, MD, Lilibeth R. Torno, MD and Ivan I. Kirov, MD.
Dr. Sender's papers by year, 2012 to 2022
Topics Dr. Sender writes about most
- Fetal Blood
- Precursor Cell Lymphoblastic Leukemia-Lymphoma
- Antineoplastic Agents
- Bone Marrow Transplantation
- Etoposide
- Neutrophils
- Antineoplastic Combined Chemotherapy Protocols
- Leukemia
Dr. Sender's most frequent co-authors
- Mitchell S. Cairo, MD14 shared papers
- Lilibeth R. Torno, MD7 shared papers
- Ivan I. Kirov, MD6 shared papers
Recent publications by Dr. Sender
See who Dr. Sender researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Sender works with, so you can find a warm path to the right pediatric hematologys and oncology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Leonard S. Sender has worked on 6 clinical trials
Dmand AI links Dr. Sender to 6 clinical trials. 2 are still active or recruiting. Conditions studied include Granulomatous Disease, Chronic, Leukemia and Neuritis. University of California, Irvine sponsors the most, 2.
Clinical trials with Dr. Sender by phase
- NonePhase 1: no trials
- 1Phase 2: 1 trial
- 1Phase 3: 1 trial
- NonePhase 4: no trials
Conditions in Dr. Sender's trials
- Granulomatous Disease, Chronic
- Leukemia
- Neuritis
- Precursor Cell Lymphoblastic Leukemia-Lymphoma
- Disease Attributes
Investigators on the most trials with Dr. Sender
- Minnie Abromowitch, MD1 shared trial
- Burton Eliot Appel, MD1 shared trial
- Gregory T. Armstrong, MD1 shared trial
Recent clinical trials with Dr. Sender
Combination Chemotherapy in Treating Patients With Non-Metastatic Extracranial Ewing Sarcoma (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Leonard S. Sender received $9,160 in industry payments from 2016 to 2025
CMS Open Payments shows 20 general payments to Dr. Sender from 7 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 75% of the total. Baxalta US Inc paid the most, $8,768.
General payments to Dr. Sender by program year, 2016 to 2025
General payments to Dr. Sender by kind, 2016 to 2025
- Speaker and faculty fees$6,90075%
- Travel and lodging$1,60918%
- Food and beverage$6517%
Companies that paid Dr. Sender the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Leonard S. Sender has 4 awards and honors on record
Dmand AI lists 4 awards for Dr. Sender, most recently Top Doctors:LA Area in 2013.
Awards and honors for Dr. Sender
- 2013
- Top Doctors:LA Area
- Top Doctors:San Diego Area
- 2012
- Top Doctors:Southern California
- Undated
- Super Doc
Source: Dmand AI Professional Profile Data
Dr. Leonard S. Sender graduated from University of the Witwatersrand
Dr. Sender graduated from University of the Witwatersrand in 1982.
- Medical school
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Leonard S. Sender accepts plans from 12 insurance carriers
Dr. Sender is in network with 12 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Molina
- Regence Health Plans
- +4 more carriersWith a free account
Plan types Dr. Sender accepts, by number of carriers
- PPO9
- Medicare8
- HMO6
- POS5
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Leonard S. Sender's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Leonard S. Sender
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Leonard S. Sender's NPI number?
Dr. Leonard S. Sender's NPI number is 1952499741. It was assigned on October 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Leonard S. Sender?
Dr. Leonard S. Sender is a pediatric hematology and oncology physician in Costa Mesa, California. The primary specialty in the NPI Registry is Pediatric Hematology & Oncology Physician (taxonomy code 2080P0207X).
Where does Dr. Leonard S. Sender practice?
Dr. Sender practices at 1640 Newport Blvd, Costa Mesa, CA 92627. Dr. Sender's primary practice is American Surgical Center-OC in Costa Mesa, California. Dmand AI also links Dr. Sender to 1 group practice or clinic.
What is Dr. Leonard S. Sender's office phone number?
The practice phone on file for Dr. Sender is (949) 309-3330.
What is Dr. Leonard S. Sender's medical license number?
Dr. Sender holds California license A41293.
What medical group is Dr. Leonard S. Sender part of?
Dr. Sender is linked to Chan Soon-Shiong Institute for Medicine.
Does Dr. Leonard S. Sender accept Medicare?
Yes. CMS data shows Dr. Sender billed Medicare for 36 services in 2016, and Dr. Sender accepts Medicare assignment.
Is Dr. Leonard S. Sender board certified?
Yes. Dr. Sender is board certified in pediatrics by the American Board of Pediatrics.
What services does Dr. Leonard S. Sender bill to Medicare?
In 2016, Dr. Sender's most billed Medicare services were office visit, established patient (99214) and hospital inpatient care (99223).
Where did Dr. Leonard S. Sender go to medical school?
Dr. Sender graduated from University of the Witwatersrand in 1982.
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What drugs does Dr. Leonard S. Sender prescribe most?
In 2016 Medicare Part D data, Dr. Sender's most prescribed drugs by claims were Ibrance and Crestor.
Has Dr. Leonard S. Sender received payments from drug or device companies?
CMS Open Payments shows $9,160 in general payments to Dr. Sender from 7 companies from 2016 to 2025. The largest total came from Baxalta US Inc.
How long has Dr. Leonard S. Sender been practicing?
Dr. Sender graduated from medical school in 1982, 44 years ago.
Does Dr. Leonard S. Sender do research?
Dmand AI links 79 publications to Dr. Sender, published from 2009 to 2022. Dr. Sender has worked on 6 clinical trials.
Who does Dr. Leonard S. Sender publish with?
Dr. Sender's most frequent co-authors are Mitchell S. Cairo, MD (14 shared papers), Lilibeth R. Torno, MD (7 shared papers) and Ivan I. Kirov, MD (6 shared papers).
What insurance does Dr. Leonard S. Sender accept?
Dr. Sender is in network with 12 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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