Elizabeth Brem, MD
Hematology & Oncology Physician · Orange, CA
Elizabeth Brem, MD is a hematology & oncology physician with a practice address in Orange, California, and NPI 1578883781, issued on Jun 10, 2010. Check the license (California 143521, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Elizabeth Brem
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 143521 CA
244302 MA
253484 MA
Self-reported in NPPES; status is on the state search - Practice location
- 101 The City Dr S Bldg 23, Orange, CA 92868
- Phone
- (714) 456-8000
- Enumerated
- Jun 10, 2010
- Record last updated
- Apr 19, 2023
- Medicare enrollment
- Enrolled (PECOS I20160726001961); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Buffalo School Of Medicine, 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 101 The City Dr S Bldg 23
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Annamarie Bedia, NPNurse Practitioner1780875005
- Zahra Sadat Hamedi, MDHematology & Oncology Physician1053974451
- Krishna Hanubal, MDRadiation Oncology Physician1568154458
- Garrett Harada, MDRadiation Oncology Physician1831726330
- Jeremy Harris, MDRadiation Oncology Physician1922427053
- Deepa Jeyakumar, M.D.Hematology & Oncology Physician1356541502
Verify Elizabeth Brem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 143521Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
685 Medicare Part D claims for 106 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 69 claims were for opioids.
Most prescribed
- Lenalidomide31 claims
- Prednisone30 claims
- Tramadol Hcl28 claims
- Entecavir27 claims
- Ondansetron Odt27 claims
- Pantoprazole Sodium25 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.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $46,190.38
51 payments; by number, the most common kind was food and beverage; the largest payer was Adc Therapeutics America, Inc. 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.
Bills Medicare through one group practice
- UC RegentsOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
Other hematology & oncology physician records in California
- Mark Abate, M.D.Santa Barbara, CA1588778674
- Iman Abdalla, MDLos Angeles, CA1730248311
- Haifaa Abdulhaq, MDFresno, CA1508024647
- Nihal Abdulla, MDLos Alamitos, CA1750585345
- Mehrad Abedi, M.D.Sacramento, CA1467459222
- Oyewale Abidoye, M.D.La Jolla, CA1790841815
- Mohammed Abu Zaanona, MDSanta Barbara, CA1922591197
- Mohamad Adada, M.D., PHDRoseville, CA1528590734
- Jesse Adams, MDSacramento, CA1851479554
- Thompson Adams, MDSanta Monica, CA1407880891
Common questions
What is Elizabeth Brem, MD's NPI number?
Elizabeth Brem, MD's National Provider Identifier (NPI) is 1578883781, issued on Jun 10, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Elizabeth Brem, MD located?
The NPPES record lists a practice address at 101 The City Dr S Bldg 23, Orange, CA, 92868. Phone: (714) 456-8000. Providers update this record themselves, so call before visiting.
How can I verify Elizabeth Brem, MD's license?
NPPES lists California license number 143521, 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 Elizabeth Brem, MD prescribe under Medicare Part D?
In 2024, Elizabeth Brem, MD had 685 Medicare Part D claims for 106 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Elizabeth Brem, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.