Jeffrey Rotwein Zweig, MD
Hematology & Oncology Physician · Pleasant Hill, CA
Jeffrey Rotwein Zweig, MD is a hematology & oncology physician with a practice address in Pleasant Hill, California, and NPI 1053600312, issued on Apr 7, 2011. Check the license (California A136852, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jeffrey Rotwein Zweig
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- A136852 CA
MD042323 DC
Self-reported in NPPES; status is on the state search - Practice location
- 400 Taylor Blvd Ste 202, Pleasant Hill, CA 94523
- Phone
- (925) 677-5041
- Enumerated
- Apr 7, 2011
- Record last updated
- Dec 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180815001725); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 2018
- Entity
- Type 1 · individual
Also registered at 400 Taylor Blvd Ste 202
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vikram Auluck, PHARMDPharmacist1326641184
- Erin Esaki, PA-CPhysician Assistant1023611100
- Yelena Krupitskaya, M.D.Hematology & Oncology Physician1750565529
Verify Jeffrey Rotwein Zweig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A136852Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,355 Medicare Part D claims for 249 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims. 133 claims were for opioids.
Most prescribed
- Abiraterone Acetate72 claims
- Anastrozole70 claims
- Dexamethasone62 claims
- Prednisone61 claims
- Hydroxyurea55 claims
- Lenalidomide54 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.
Bills Medicare through one group practice
- Permanente Medical Group IncAntioch, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
11 hematology & oncology physician records list a practice address in Pleasant Hill
They are 11 of the 843 NPPES records with a practice address in Pleasant Hill, and 1,583 hematology & oncology physician records in California.
All 11 in Pleasant Hill → All 1,583 in California → Every provider in Pleasant Hill →
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 Jeffrey Rotwein Zweig, MD's NPI number?
Jeffrey Rotwein Zweig, MD's National Provider Identifier (NPI) is 1053600312, issued on Apr 7, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey Rotwein Zweig, MD located?
The NPPES record lists a practice address at 400 Taylor Blvd Ste 202, Pleasant Hill, CA, 94523. Phone: (925) 677-5041. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey Rotwein Zweig, MD's license?
NPPES lists California license number A136852, 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 Jeffrey Rotwein Zweig, MD prescribe under Medicare Part D?
In 2024, Jeffrey Rotwein Zweig, MD had 1,355 Medicare Part D claims for 249 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.