NPI registry status
Active
2026 NPPES data Nuclear Cardiology Physician NPI 1609806041 M D
Verify on CMS → Siva Arunasalam, M D
Nuclear Cardiology Physician in Victorville, 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 374 in Nuclear Cardiology 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
16K
Medicare Part D claims · 848 beneficiaries · Nuclear Cardiology Physician avg: 4K
Generic prescribing
77%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
85.9/100
▲ 3 pts above national avg 83.1 · Above neutral
Industry payments
$3.5K
82 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
Siva Arunasalam, M D reported a CMS MIPS final score of 85.9/100 - above the 83.1 national average - and filed 15,982 Medicare Part D claims in 2023.
- 85.9/100
- MIPS score · +3 vs avg
- 16K
- Part D claims, 2023
- 77%
- 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.
Siva Arunasalam, 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
86 49th percentile higher than 49% 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 Siva Arunasalam, M D sits
This provider among nuclear cardiology physician peers
Across the 162 nuclear cardiology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Siva Arunasalam, M D writes more Part D claims than 99% of them and scores higher on MIPS quality than 49% - 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 nuclear cardiology physician peer from a representative sample of 60; the gold marker is Siva Arunasalam, M D. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Siva Arunasalam, M D 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 Siva Arunasalam, M D?
High performer (top quartile)Primary specialty
Nuclear Cardiology Physician
Medicare Part D claims
15,982 298% vs specialty avg
MIPS final score
85.9/100 2.8 pts vs avg
Specialty distribution in California
How Nuclear Cardiology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Siva Arunasalam, M D's 2023 MIPS final score plotted against the Nuclear Cardiology Physician national average
- MIPS Final Score
- 85.9/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Nuclear Cardiology Physician) - 85.9/100 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).
Siva Arunasalam, M D appears in the CMS NPPES registry as a Nuclear Cardiology Physician provider holding M D credentials at 12780 HESPERIA RD, Victorville, CA, 92395, with a listed phone of (760) 946-5177. NPI 1609806041 was issued on 07/03/2006.
Medicare Part D records for calendar year 2023 show 15,982 prescription claims written by this provider, covering 848 Medicare beneficiaries and totaling roughly $5.5 million in drug spend, split 22% brand-name and 77% generic by claim count, with an opioid prescribing rate of 3.1%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 85.9/100 for the 2023 performance year (Quality 80.2, Cost 51.1), compared with the national average of 83.1.
Nuclear Cardiology Physician is a narrow specialty nationwide, with 374 enrolled providers across 37 states and an average of 4,019 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 | 1609806041 |
|---|---|
| Specialty | Nuclear Cardiology Physician |
| Credentials | M D |
| Gender | Male |
| NPI Issued | 07/03/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
85.8925
Final Score
Avg: 83.1
80.2178
Quality
51.055
Cost
Reporting: Individual
Hospital and facility affiliations
Facilities where Siva Arunasalam, M D 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.
Sach Physician Billing Trust
Upland, 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).
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 Siva Arunasalam, M D. Source: openpaymentsdata.cms.gov.
Total received
$3.5K
Largest payer
ShockWave Medical, Inc
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 Siva Arunasalam, M D. To verify Siva Arunasalam, 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 · Typical
Siva Arunasalam, M D - brand share 22.0%
Nuclear Cardiology Physician average
22% brand-name claims vs 77% generic, on 15,982 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.
15,982
Total Claims
$5.5M
Total Drug Cost
848
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 28,944
- Total Day Supply
- 843,371
- Brand vs Generic
- 22% brand / 77% generic
- Brand Drug Cost
- $5.1M
- Generic Drug Cost
- $414K
- Opioid Claims
- 497 (3.1% rate)
- Antibiotic Claims
- 527
Patient Demographics
- Average Patient Age
- 74.1 years
- Avg HCC Risk Score
- 2.09
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 106, 65-74: 326, 75-84: 289, 85+: 127
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Siva Arunasalam, M D prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
553 claims
- Furosemide
Furosemide
523 claims
- Potassium Chloride
Potassium Chloride
515 claims
- Entresto
Entresto
458 claims
- Metoprolol Succinate
Metoprolol Succinate
442 claims
- Atorvastatin Calcium
Atorvastatin Calcium
399 claims
- Clopidogrel
Clopidogrel
386 claims
- Alprazolam
Alprazolam
362 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 553 |
| Furosemide | 523 |
| Potassium Chloride | 515 |
| Entresto Sacubitril/Valsartan | 458 |
| Metoprolol Succinate | 442 |
| Atorvastatin Calcium | 399 |
| Clopidogrel Clopidogrel Bisulfate | 386 |
| Alprazolam | 362 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 320 |
| Xarelto Rivaroxaban | 312 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nuclear Cardiology Physician Overview
How Siva Arunasalam, M D fits within the Nuclear Cardiology Physician landscape nationally.
374
Nuclear Cardiology Physician Providers in US
37
States with Nuclear Cardiology Physician
4,019
Avg Claims per Provider
Siva Arunasalam, M D's 15,982 claims are above the specialty average of 4,019.
Nearby Nuclear Cardiology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Arunasalam.
Dr. Riaz Ahmed
M.D.
Encinitas, CA
Dr. Shadfar Bahri
M.D.
Los Angeles, CA
Dr. Leslie Baluyot
MD
Modesto, CA
Dr. Raye Bellinger
MD
Sacramento, CA
Dr. Shalini Bhambani
M.D.
Redwood City, CA
Compare Nuclear Cardiology 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 Nuclear Cardiology 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 Siva Arunasalam, M D's specialty? ▼
Siva Arunasalam, M D specializes in Nuclear Cardiology Physician and practices in Victorville, California. Credentials: M D.
How much does Siva Arunasalam, M D prescribe under Medicare Part D? ▼
In 2023, Siva Arunasalam, M D wrote 15,982 Medicare Part D claims totaling $5.5M in drug costs for 848 beneficiaries.
What is Siva Arunasalam, M D's Medicare quality score? ▼
Siva Arunasalam, M D has a CMS MIPS Final Score of 85.9/100 (Quality: 80.2, Cost: 51.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Siva Arunasalam, M D located? ▼
Siva Arunasalam, M D is located at 12780 HESPERIA RD, Victorville, CA, 92395. Phone: (760) 946-5177.
What is Siva Arunasalam, M D's NPI number? ▼
Siva Arunasalam, M D's National Provider Identifier (NPI) is 1609806041, issued on 07/03/2006.
Does Siva Arunasalam, M D prescribe more brand-name or generic drugs? ▼
Siva Arunasalam, M D's prescribing is 22% brand-name and 77% generic drugs by claim count, with $5.1M in brand drug costs.
Does Siva Arunasalam, M D prescribe opioids? ▼
Yes, Siva Arunasalam, M D had 497 opioid claims in 2023 with an opioid prescribing rate of 3.1%.
How many Nuclear Cardiology Physician providers are there in the US? ▼
There are 374 Nuclear Cardiology Physician providers across 37 states in the US. The average Nuclear Cardiology Physician provider writes 4,019 Medicare Part D claims per year.
What drugs does Siva Arunasalam, M D prescribe most often? ▼
Based on 2023 Medicare Part D data, Siva Arunasalam, M D's most frequently prescribed drugs include Levothyroxine Sodium, Furosemide, Potassium Chloride. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Siva Arunasalam, M D accept Medicare? ▼
Siva Arunasalam, M D appears in CMS Medicare data with 15,982 Part D claims and 848 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Siva Arunasalam, M D's credentials? ▼
Siva Arunasalam, M D's NPI is 1609806041 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.