Aaron Rosenberg, M.D., M.S.
Hematology & Oncology Physician · Sacramento, CA
Aaron Rosenberg, M.D., M.S. is a hematology & oncology physician with a practice address in Sacramento, California, and NPI 1144479411, issued on Sep 11, 2008. Check the license (California A131746, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Aaron Rosenberg
- Credential
- M.D., M.S.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- A131746 CA
244419 MA
MD437380 PA
MT188309 PA
Self-reported in NPPES; status is on the state search - Practice location
- 4501 X St Ste 3016, Sacramento, CA 95817
- Phone
- (916) 734-5981
- Enumerated
- Sep 11, 2008
- Record last updated
- Sep 26, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (916) 734-0631
- Medicare enrollment
- Enrolled (PECOS I20140918002682); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 4501 X St Ste 3016
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mehrad Abedi, M.D.Hematology & Oncology Physician1467459222
- Justin ChenHematology & Oncology Physician1326433244
- Joanna Eldredge, M.D.Student in an Organized Health Care Education/Training Program1548656713
- Naseem Esteghamat, M.D.Hematology & Oncology Physician1437491222
- Jacqueline Hsieh-WongInternal Medicine Physician1285083121
- Brian Jonas, M.D., PHDHematology & Oncology Physician1558542209
Verify Aaron Rosenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A131746Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
700 Medicare Part D claims for 118 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims. 11 claims were for opioids.
Most prescribed
- Acyclovir116 claims
- Dexamethasone91 claims
- Ondansetron Hcl55 claims
- Prochlorperazine Maleate34 claims
- Zarxio29 claims
- Venclexta25 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.
Industry payments in 2024: $6,987.72
5 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer 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
- Regents OF The Univ OF CAMerced, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron Rosenberg among 1,583 hematology & oncology physician records in California
Aaron Rosenberg, M.D., M.S. 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 2008, is newer than 60% of them.
- NPI issued2008 · 60% of these records are older, 34% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2002 · median 2003 among the 1,124 with a school on file
- Record last updated2019 · 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 Sacramento → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Mehrad Abedi, M.D.Sacramento, CA 958171467459222
- Helen Chew, M.D.Sacramento, CA 958171801870142
- David Gandara, M.D.Sacramento, CA 958171528042587
- Richard Guy, M.D.Sacramento, CA 958171578545190
- Kit Lam, M.D., PH.D.Sacramento, CA 958171306829577
- Primo Lara, M.D.Sacramento, CA 958171972585743
- Derick Lau, M.D., PH.D.Sacramento, CA 958171801879077
- Robert O'Donnell, M.D., PH.D.Sacramento, CA 958171386627586
Common questions
What is Aaron Rosenberg, M.D., M.S.'s NPI number?
Aaron Rosenberg, M.D., M.S.'s National Provider Identifier (NPI) is 1144479411, issued on Sep 11, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Rosenberg, M.D., M.S. located?
The NPPES record lists a practice address at 4501 X St Ste 3016, Sacramento, CA, 95817. Phone: (916) 734-5981. Providers update this record themselves, so call before visiting.
How can I verify Aaron Rosenberg, M.D., M.S.'s license?
NPPES lists California license number A131746, 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 Aaron Rosenberg, M.D., M.S. prescribe under Medicare Part D?
In 2024, Aaron Rosenberg, M.D., M.S. had 700 Medicare Part D claims for 118 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.