NPI registry status
Active
2026 NPPES data Hematology & Oncology Physician NPI 1619933132 M.D.
Verify on CMS → Michael Benjamin, M.D.
Hematology & Oncology Physician in West Hills, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 11,215 in Hematology & Oncology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
1K
Medicare Part D claims · 142 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
15%
generic claims · 85% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
0/100
▼ 83 pts below national avg 83.1 · Penalty band
Industry payments
$2.6K
99 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Michael Benjamin, M.D. reported a CMS MIPS final score of 0/100 - below the 83.1 national average - and filed 1,255 Medicare Part D claims in 2023.
- 0/100
- MIPS score · -83 vs avg
- 1K
- Part D claims, 2023
- 15%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Michael Benjamin, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
0 0th percentile higher than 0% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Michael Benjamin, M.D. sits
This provider among hematology & oncology physician peers
Across the 4,233 hematology & oncology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Michael Benjamin, M.D. writes more Part D claims than 73% of them and scores higher on MIPS quality than 0% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one hematology & oncology physician peer from a representative sample of 60; the gold marker is Michael Benjamin, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Michael Benjamin, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Michael Benjamin, M.D.?
Below national averagePrimary specialty
Hematology & Oncology Physician
Medicare Part D claims
1,255 48% vs specialty avg
MIPS final score
0/100 83.1 pts vs avg
Specialty distribution in California
How Hematology & Oncology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Michael Benjamin, M.D.'s 2023 MIPS final score plotted against the Hematology & Oncology Physician national average
- MIPS Final Score
- 0/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Hematology & Oncology Physician) - 0/100 vs national avg 83.1
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Michael Benjamin, M.D. appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding M.D. credentials at 7325 MEDICAL CENTER DR STE 301, West Hills, CA, 91307, with a listed phone of (818) 570-2134. NPI 1619933132 was issued on 04/24/2006.
Medicare Part D records for calendar year 2023 show 1,255 prescription claims written by this provider, covering 142 Medicare beneficiaries and totaling roughly $9.7 million in drug spend, split 85% brand-name and 15% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 0/100 for the 2023 performance year (Quality 0), compared with the national average of 83.1.
Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,215 enrolled providers across 54 states and an average of 847 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1619933132 |
|---|---|
| Specialty | Hematology & Oncology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 04/24/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
0
Final Score
Avg: 83.1
0
Quality
Reporting: Individual
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Michael Benjamin, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$2.6K
Largest payer
Novartis Pharmaceuticals Corporation
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Michael Benjamin, M.D.. To verify Michael Benjamin, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Brand-heavy
Michael Benjamin, M.D. - brand share 85.0%
Hematology & Oncology Physician average
85% brand-name claims vs 15% generic, on 1,255 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,255
Total Claims
$9.7M
Total Drug Cost
142
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,410
- Total Day Supply
- 39,182
- Brand vs Generic
- 85% brand / 15% generic
- Brand Drug Cost
- $9.5M
- Generic Drug Cost
- $208K
Patient Demographics
- Average Patient Age
- 76.2 years
- Avg HCC Risk Score
- 2.44
- Gender Split
- 52% female / 48% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Michael Benjamin, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Procrit
Procrit
305 claims
- Xtandi 106
Xtandi
106 claims
- Neulasta 101
Neulasta
101 claims
- Gammagard Liquid 74
Gammagard Liquid
74 claims
- Xgeva 72
Xgeva
72 claims
- Imbruvica 43
Imbruvica
43 claims
- Lupron Depot 38
Lupron Depot
38 claims
- Fulvestrant 27
Fulvestrant
27 claims
| Drug | Claims |
|---|---|
| Procrit Epoetin Alfa | 305 |
| Xtandi Enzalutamide | 106 |
| Neulasta Pegfilgrastim | 101 |
| Gammagard Liquid Immun Glob G(Igg)/Gly/Iga Ov50 | 74 |
| Xgeva Denosumab | 72 |
| Imbruvica Ibrutinib | 43 |
| Lupron Depot Leuprolide Acetate | 38 |
| Fulvestrant | 27 |
| Ondansetron Hcl | 23 |
| Eliquis Apixaban | 22 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hematology & Oncology Physician Overview
How Michael Benjamin, M.D. fits within the Hematology & Oncology Physician landscape nationally.
11,215
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider
Michael Benjamin, M.D.'s 1,255 claims are above the specialty average of 847.
Nearby Hematology & Oncology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Benjamin.
Dr. Mark Abate
M.D.
Santa Barbara, CA
Dr. Iman Abdalla
MD
Los Angeles, CA
Dr. Nihal Abdulla
MD
Los Alamitos, CA
Dr. Oyewale Abidoye
M.D.
La Jolla, CA
Dr. Mohamad Adada
M.D., PHD
Roseville, CA
Compare Hematology & Oncology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hematology & Oncology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Michael Benjamin, M.D.'s specialty? ▼
Michael Benjamin, M.D. specializes in Hematology & Oncology Physician and practices in West Hills, California. Credentials: M.D..
How much does Michael Benjamin, M.D. prescribe under Medicare Part D? ▼
In 2023, Michael Benjamin, M.D. wrote 1,255 Medicare Part D claims totaling $9.7M in drug costs for 142 beneficiaries.
What is Michael Benjamin, M.D.'s Medicare quality score? ▼
Michael Benjamin, M.D. has a CMS MIPS Final Score of 0/100 (Quality: 0). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Michael Benjamin, M.D. located? ▼
Michael Benjamin, M.D. is located at 7325 MEDICAL CENTER DR STE 301, West Hills, CA, 91307. Phone: (818) 570-2134.
What is Michael Benjamin, M.D.'s NPI number? ▼
Michael Benjamin, M.D.'s National Provider Identifier (NPI) is 1619933132, issued on 04/24/2006.
Does Michael Benjamin, M.D. prescribe more brand-name or generic drugs? ▼
Michael Benjamin, M.D.'s prescribing is 85% brand-name and 15% generic drugs by claim count, with $9.5M in brand drug costs.
How many Hematology & Oncology Physician providers are there in the US? ▼
There are 11,215 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does Michael Benjamin, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Michael Benjamin, M.D.'s most frequently prescribed drugs include Procrit, Xtandi, Neulasta. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Benjamin, M.D. accept Medicare? ▼
Michael Benjamin, M.D. appears in CMS Medicare data with 1,255 Part D claims and 142 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Benjamin, M.D.'s credentials? ▼
Michael Benjamin, M.D.'s NPI is 1619933132 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.