NPI registry status
Active
2026 NPPES data Hematology & Oncology Physician NPI 1801143722 MD
Verify on CMS → Arun Kumar Arumugam Raajasekar, MD
Hematology & Oncology Physician in Mountain View, 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 · 212 beneficiaries · Hematology & Oncology Physician avg: 847
MIPS score
82.4/100
▼ 1 pts below national avg 83.1 · Above neutral
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Arun Kumar Arumugam Raajasekar, MD reported a CMS MIPS final score of 82.4/100 - below the 83.1 national average - and filed 1,278 Medicare Part D claims in 2023.
- 82.4/100
- MIPS score · -1 vs avg
- 1K
- Part D claims, 2023
- 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.
Arun Kumar Arumugam Raajasekar, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
82 39th percentile higher than 39% 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 Arun Kumar Arumugam Raajasekar, MD 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, Arun Kumar Arumugam Raajasekar, MD writes more Part D claims than 73% of them and scores higher on MIPS quality than 38% - 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 Arun Kumar Arumugam Raajasekar, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Arun Kumar Arumugam Raajasekar, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - 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 Arun Kumar Arumugam Raajasekar, MD?
Near national averagePrimary specialty
Hematology & Oncology Physician
Medicare Part D claims
1,278 51% vs specialty avg
MIPS final score
82.4/100 0.7 pts vs avg
Specialty distribution in California
How Hematology & Oncology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Arun Kumar Arumugam Raajasekar, MD's 2023 MIPS final score plotted against the Hematology & Oncology Physician national average
- MIPS Final Score
- 82.4/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Hematology & Oncology Physician) - 82.4/100 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).
Arun Kumar Arumugam Raajasekar, MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at 2505 HOSPITAL DR, Mountain View, CA, 94040, with a listed phone of (650) 988-8338. NPI 1801143722 was issued on 08/09/2012.
Medicare Part D records for calendar year 2023 show 1,278 prescription claims written by this provider, covering 212 Medicare beneficiaries and totaling roughly $5.2 million in drug spend, with an opioid prescribing rate of 4.1%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 82.4/100 for the 2023 performance year (Quality 83.6, Cost 57.7), 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 | 1801143722 |
|---|---|
| Specialty | Hematology & Oncology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/09/2012 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
82.37
Final Score
Avg: 83.1
83.5701
Quality
57.6633
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Arun Kumar Arumugam Raajasekar, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
EL Camino Health Medical Network LLC
Mountain View, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Arun Kumar Arumugam Raajasekar, MD. To verify Arun Kumar Arumugam Raajasekar, MD'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,278
Total Claims
$5.2M
Total Drug Cost
212
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,560
- Total Day Supply
- 38,913
- Generic Drug Cost
- $627K
- Opioid Claims
- 52 (4.1% rate)
- Antibiotic Claims
- 55
Patient Demographics
- Average Patient Age
- 74.3 years
- Avg HCC Risk Score
- 2.39
- Gender Split
- 33% female / 67% male
- Age Distribution
- <65: 18, 65-74: 88, 75-84: 90, 85+: 16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Arun Kumar Arumugam Raajasekar, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Abiraterone Acetate
Abiraterone Acetate
131 claims
- Ondansetron Hcl
Ondansetron Hcl
125 claims
- Xtandi
Xtandi
120 claims
- Prednisone
Prednisone
116 claims
- Prochlorperazine M…
Prochlorperazine Maleate
116 claims
- Dexamethasone
Dexamethasone
56 claims
- Oxycodone Hcl 36
Oxycodone Hcl
36 claims
- Cabometyx 29
Cabometyx
29 claims
| Drug | Claims |
|---|---|
| Abiraterone Acetate | 131 |
| Ondansetron Hcl | 125 |
| Xtandi Enzalutamide | 120 |
| Prednisone | 116 |
| Prochlorperazine Maleate | 116 |
| Dexamethasone | 56 |
| Oxycodone Hcl | 36 |
| Cabometyx Cabozantinib S-Malate | 29 |
| Eliquis Apixaban | 24 |
| Hydroxyurea | 24 |
* 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 Arun Kumar Arumugam Raajasekar, MD 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
Arun Kumar Arumugam Raajasekar, MD's 1,278 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 Arumugam Raajasekar.
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 Arun Kumar Arumugam Raajasekar, MD's specialty? ▼
Arun Kumar Arumugam Raajasekar, MD specializes in Hematology & Oncology Physician and practices in Mountain View, California. Credentials: MD.
How much does Arun Kumar Arumugam Raajasekar, MD prescribe under Medicare Part D? ▼
In 2023, Arun Kumar Arumugam Raajasekar, MD wrote 1,278 Medicare Part D claims totaling $5.2M in drug costs for 212 beneficiaries.
What is Arun Kumar Arumugam Raajasekar, MD's Medicare quality score? ▼
Arun Kumar Arumugam Raajasekar, MD has a CMS MIPS Final Score of 82.4/100 (Quality: 83.6, Cost: 57.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Arun Kumar Arumugam Raajasekar, MD located? ▼
Arun Kumar Arumugam Raajasekar, MD is located at 2505 HOSPITAL DR, Mountain View, CA, 94040. Phone: (650) 988-8338.
What is Arun Kumar Arumugam Raajasekar, MD's NPI number? ▼
Arun Kumar Arumugam Raajasekar, MD's National Provider Identifier (NPI) is 1801143722, issued on 08/09/2012.
Does Arun Kumar Arumugam Raajasekar, MD prescribe opioids? ▼
Yes, Arun Kumar Arumugam Raajasekar, MD had 52 opioid claims in 2023 with an opioid prescribing rate of 4.1%.
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 Arun Kumar Arumugam Raajasekar, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Arun Kumar Arumugam Raajasekar, MD's most frequently prescribed drugs include Abiraterone Acetate, Ondansetron Hcl, Xtandi. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Arun Kumar Arumugam Raajasekar, MD accept Medicare? ▼
Arun Kumar Arumugam Raajasekar, MD appears in CMS Medicare data with 1,278 Part D claims and 212 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Arun Kumar Arumugam Raajasekar, MD's credentials? ▼
Arun Kumar Arumugam Raajasekar, MD's NPI is 1801143722 with credentials MD. 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.