Sarah E. Tomassetti, M.D.
Hematology & Oncology Physician · Torrance, CA
Sarah E. Tomassetti, M.D. is a hematology & oncology physician with a practice address in Torrance, California, and NPI 1003159427, issued on Apr 3, 2013. Check the license (California A133560, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sarah E. Tomassetti
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- A133560 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 W Carson St # N18, Torrance, CA 90502
- Phone
- (310) 745-2882
- Enumerated
- Apr 3, 2013
- Record last updated
- Jun 6, 2024
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 1000 W Carson St # N18
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marcin Dragan, M.D.Hematology & Oncology Physician1508354358
- Charity Huang, MDHematology & Oncology Physician1891157657
- Jennifer Lee, M.D.Hematology & Oncology Physician1164798062
- Gene Yoshikawa, MDInternal Medicine Physician1710447628
Verify Sarah E. Tomassetti in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A133560Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $7,202.27
8 payments; by number, the most common kind was consulting fee; the largest payer was Novartis Pharmaceuticals Corporation. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Sarah E. Tomassetti among 1,583 hematology & oncology physician records in California
Sarah E. Tomassetti, M.D. 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 2013, is newer than 79% of them.
- NPI issued2013 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2024 · 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 Torrance → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Bryan Chan, MD, MPHTorrance, CA 905021518699982
- Rowan Chlebowski, M.D., PHDTorrance, CA 905021902876386
- Marcin Dragan, M.D.Torrance, CA 905021508354358
- Charity Huang, MDTorrance, CA 905021891157657
- Andrew Hwang, MDTorrance, CA 905021154858694
- Jennifer Lee, M.D.Torrance, CA 905021164798062
- Yenmay LouTorrance, CA 905021679766042
- Yutaka Niihara, M.D.Torrance, CA 905021467480459
Common questions
What is Sarah E. Tomassetti, M.D.'s NPI number?
Sarah E. Tomassetti, M.D.'s National Provider Identifier (NPI) is 1003159427, issued on Apr 3, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Sarah E. Tomassetti, M.D. located?
The NPPES record lists a practice address at 1000 W Carson St # N18, Torrance, CA, 90502. Phone: (310) 745-2882. Providers update this record themselves, so call before visiting.
How can I verify Sarah E. Tomassetti, M.D.'s license?
NPPES lists California license number A133560, 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.
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.