Samuel Jacob Slomowitz, M.D.
Hematology & Oncology Physician · Los Angeles, CA
Samuel Jacob Slomowitz, M.D. is a hematology & oncology physician with a practice address in Los Angeles, California, and NPI 1659525756, issued on Nov 17, 2008. Check the license (California 130892, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Samuel Jacob Slomowitz
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 130892 CA
7465189-1205 UT
Self-reported in NPPES; status is on the state search - Practice location
- 200 Med Plaza, Los Angeles, CA 90024
- Phone
- (805) 496-5153
- Enumerated
- Nov 17, 2008
- Record last updated
- Aug 9, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140911000853); 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 200 Med Plaza
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Wanxing Chai-Ho, M.D.Hematology & Oncology Physician1023371515
- Jeffrey Chung, M.D.Hospitalist Physician1598147209
- Andrew DayEndocrinology, Diabetes & Metabolism Physician1336584515
Verify Samuel Jacob Slomowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 130892Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
770 Medicare Part D claims for 189 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims. 12 claims were for opioids.
Most prescribed
- Anastrozole106 claims
- Letrozole62 claims
- Hydroxyurea43 claims
- Xtandi40 claims
- Eliquis32 claims
- Tamoxifen Citrate27 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): 86.1 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: $37.97
1 payment: food and beverage; the largest payer was Intuitive Surgical, 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
- The Regents OF The University OF CaliforniaThousand Oaks, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Samuel Jacob Slomowitz among 1,583 hematology & oncology physician records in California
Samuel Jacob Slomowitz, 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 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
- Graduated2008 · median 2003 among the 1,124 with a school on file
- Record last updated2018 · 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 Los Angeles → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Wanxing Chai-Ho, M.D.Los Angeles, CA 900241023371515
- Gottfried Konecny, MDLos Angeles, CA 900241427190115
- Nicholas McAndrew, M.D.Los Angeles, CA 900241093074106
- Joshua Sasine, M.D.Los Angeles, CA 900241396044566
- Daniel Shin, M.D.Los Angeles, CA 900241386902419
- Namphuong TranLos Angeles, CA 900241861917593
- Deborah Wong, M.D., PH.D.Los Angeles, CA 900241902044951
- VI Chiu, M.D., PH.D.Los Angeles, CA 900251992725865
Common questions
What is Samuel Jacob Slomowitz, M.D.'s NPI number?
Samuel Jacob Slomowitz, M.D.'s National Provider Identifier (NPI) is 1659525756, issued on Nov 17, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Samuel Jacob Slomowitz, M.D. located?
The NPPES record lists a practice address at 200 Med Plaza, Los Angeles, CA, 90024. Phone: (805) 496-5153. Providers update this record themselves, so call before visiting.
How can I verify Samuel Jacob Slomowitz, M.D.'s license?
NPPES lists California license number 130892, 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 Samuel Jacob Slomowitz, M.D. prescribe under Medicare Part D?
In 2024, Samuel Jacob Slomowitz, M.D. had 770 Medicare Part D claims for 189 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Samuel Jacob Slomowitz, M.D.'s MIPS final score?
The 2023 MIPS final score is 86.1 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.