Michael Del Rosario, M.D.
Hematology & Oncology Physician · Lakewood, CA
Michael Del Rosario, M.D. is a hematology & oncology physician with a practice address in Lakewood, California, and NPI 1891164307, issued on Sep 15, 2015. Check the license (California A151675, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael Del Rosario
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- A151675 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3300 E South St Ste 304, Lakewood, CA 90805
- Phone
- (562) 232-0550
- Enumerated
- Sep 15, 2015
- Record last updated
- Jun 5, 2024
- Medicare enrollment
- Enrolled (PECOS I20180713001578); accepts Medicare assignment
- 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 3300 E South St Ste 304
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Junaid ArshadHematology & Oncology Physician1831506898
- Omkar Marathe, MDHematology & Oncology Physician1982989836
Verify Michael Del Rosario in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A151675Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
385 Medicare Part D claims for 150 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims. 13 claims were for opioids.
Most prescribed
- Letrozole80 claims
- Anastrozole24 claims
- Abiraterone Acetate19 claims
- Keytruda15 claims
- Ondansetron Hcl13 claims
- Prednisone11 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 practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,362.36
96 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. 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
- The Oncology Institute CA, A Professional CorporationLakewood, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Del Rosario among 1,583 hematology & oncology physician records in California
Michael Del Rosario, 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 2015, is newer than 84% of them.
- NPI issued2015 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2015 · median 2003 among the 1,124 with a school on file
- 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 Lakewood → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Sultanali Alidina, M.D.Lakewood, CA 908051063411684
- Junaid ArshadLakewood, CA 908051831506898
- Eric Cheung, D.O.Lakewood, CA 908051881872687
- Omkar Marathe, MDLakewood, CA 908051982989836
- Jonathan Blitzer, MDLong Beach, CA 908061912967324
- Eknath Deo, M.D., F.A.C.P.Long Beach, CA 908061568485415
- Esha Sachdev, MDLong Beach, CA 908061114260460
- Farah Shah, MDLong Beach, CA 908061114555794
Common questions
What is Michael Del Rosario, M.D.'s NPI number?
Michael Del Rosario, M.D.'s National Provider Identifier (NPI) is 1891164307, issued on Sep 15, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Michael Del Rosario, M.D. located?
The NPPES record lists a practice address at 3300 E South St Ste 304, Lakewood, CA, 90805. Phone: (562) 232-0550. Providers update this record themselves, so call before visiting.
How can I verify Michael Del Rosario, M.D.'s license?
NPPES lists California license number A151675, 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 Michael Del Rosario, M.D. prescribe under Medicare Part D?
In 2024, Michael Del Rosario, M.D. had 385 Medicare Part D claims for 150 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Michael Del Rosario, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. 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.