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Data Sources: Centers for Medicare & Medicaid Services (CMS), Medicare Provider Utilization and Payment Data
Disclaimer: This site is an independent journalism project. Data analysis and editorial content are not affiliated with or endorsed by CMS or any government agency. All spending figures are based on publicly available Medicare payment records.
Sister Sites: OpenMedicaid ยท OpenFeds ยท OpenSpending

ยฉ 2026 OpenMedicare. Independent data journalism. Built by TheDataProject.ai

Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. Kumaraswamy Sivakumar
๐Ÿง 
MDIndividual

Kumaraswamy Sivakumar, M.D.

NPI: 1821035254
Phoenix, AZ
10 years of data
Neurology
$25.9M
Total Payments
106
Beneficiaries
718.1K
Services
3.19x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$25.9M
Specialty median$87.3K

๐Ÿ“‹ Key Findings

1Billed $25.9M over 10 years
23.19x markup ratio (above median)
399th percentile in Neurology by payments
4287 services/day โ€” physically implausible
5Payments surged 97% in 2016
612 procedures with >3x markup

โš ๏ธ This provider averages 287 services per working day โ€” physically unusual for an individual practitioner

Based on 718.1K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $25.9M in total Medicare payments ranks in the 99th percentile of Neurology providers nationally.

Averaging 287 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 150% from 2014 to 2023.

AI-generated analysis based on Medicare payment data.

Annual Medicare Payments

Annual Services Provided

Avg Payment per Service

Markup Ratio Over Time

๐Ÿ“ˆ

Notable: Payments increased 97% in 2016

Year-over-year payment surges can indicate changes in practice volume, new services, or billing pattern shifts.

Submitted Charges vs. Medicare Payments

Average per-service amounts submitted by the provider compared to what Medicare actually paid โ€” the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$92.04$26.293.50x$65.75$1.4M52.6K11
2015$101.35$31.893.18x$69.46$1.3M39.9K8
2016$99.76$32.533.07x$67.23$2.5M77.2K9
2017$97.15$28.303.43x$68.85$1.9M66.9K11
2018$173.19$41.584.17x$131.61$2.9M69.2K13
2019$102.96$31.413.28x$71.55$2.7M84.9K10
2020$99.53$32.963.02x$66.57$2.9M87.6K9
2021$99.91$36.392.75x$63.52$3.1M86.0K10
2022$131.43$44.712.94x$86.72$3.8M85.6K13
2023$148.92$50.652.94x$98.27$3.5M68.2K12

Top Procedures (20)

J1561Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg
$9.2M
275.6K services$33.28/svc2.99x markup
J1568Injection, immune globulin, (octagam), intravenous, non-lyophilized (e.g., liquid), 500 mgโš  3.3x markup
$7.9M
262.3K services$30.17/svc3.26x markup
J1556Injection, immune globulin (bivigam), 500 mg
$4.7M
83.9K services$55.57/svc2.88x markup
J1566Injection, immune globulin, intravenous, lyophilized (e.g., powder), not otherwise specified, 500 mgโš  3.0x markup
$826.7K
33.4K services$24.75/svc3.03x markup
J3490Unclassified drugsโš  6.9x markup
$754.1K
1.4K services$538.29/svc6.92x markup
J1459Injection, immune globulin (privigen), intravenous, non-lyophilized (e.g., liquid), 500 mg
$579.8K
15.5K services$37.41/svc2.94x markup
99214Established patient office or other outpatient visit, 30-39 minutes
$507.2K
6.4K services$79.23/svc2.54x markup
96365Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or lessโš  3.5x markup
$349.6K
6.6K services$52.96/svc3.49x markup
J1576Injection, immune globulin (panzyga), intravenous, non-lyophilized (e.g., liquid), 500 mgโš  3.5x markup
$262.7K
5.1K services$51.51/svc3.49x markup
96366Infusion into a vein for therapy, prevention, or diagnosis, each additional hourโš  3.5x markup
$229.0K
14.7K services$15.58/svc3.53x markup
J1569Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mgโš  4.2x markup
$214.3K
6.5K services$33.06/svc4.23x markup
99204New patient office or other outpatient visit, 45-59 minutes
$148.3K
1.2K services$119.88/svc2.62x markup
95886Needle measurement of electrical activity in arm or leg muscles, complete study
$106.0K
1.4K services$74.34/svc2.90x markup
95911Nerve conduction, 9-10 studiesโš  3.1x markup
$86.6K
491 services$176.30/svc3.12x markup
99215Established patient office or other outpatient visit, 40-54 minutes
$37.7K
281 services$134.01/svc2.09x markup
95909Nerve conduction, 5-6 studiesโš  3.1x markup
$28.0K
249 services$112.28/svc3.07x markup
95910Nerve conduction, 7-8 studiesโš  3.0x markup
$11.1K
74 services$149.64/svc3.04x markup
J2930Injection, methylprednisolone sodium succinate, up to 125 mgโš  7.1x markup
$6.4K
1.5K services$4.23/svc7.10x markup
94375Diagnostic testing in a pulmonary function lab
$5.5K
195 services$27.98/svc2.77x markup
95937Testing with stimulation for assessment of function at muscle-nerve junctionโš  3.1x markup
$1.7K
26 services$64.42/svc3.07x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J1561Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg275.6K$9.2M$33.282.99x
J1568Injection, immune globulin, (octagam), intravenous, non-lyophilized (e.g., liquid), 500 mg262.3K$7.9M$30.173.26x
J1556Injection, immune globulin (bivigam), 500 mg83.9K$4.7M$55.572.88x
J1566Injection, immune globulin, intravenous, lyophilized (e.g., powder), not otherwise specified, 500 mg33.4K$826.7K$24.753.03x
J3490Unclassified drugs1.4K$754.1K$538.296.92x
J1459Injection, immune globulin (privigen), intravenous, non-lyophilized (e.g., liquid), 500 mg15.5K$579.8K$37.412.94x
99214Established patient office or other outpatient visit, 30-39 minutes6.4K$507.2K$79.232.54x
96365Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less6.6K$349.6K$52.963.49x
J1576Injection, immune globulin (panzyga), intravenous, non-lyophilized (e.g., liquid), 500 mg5.1K$262.7K$51.513.49x
96366Infusion into a vein for therapy, prevention, or diagnosis, each additional hour14.7K$229.0K$15.583.53x
J1569Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg6.5K$214.3K$33.064.23x
99204New patient office or other outpatient visit, 45-59 minutes1.2K$148.3K$119.882.62x
95886Needle measurement of electrical activity in arm or leg muscles, complete study1.4K$106.0K$74.342.90x
95911Nerve conduction, 9-10 studies491$86.6K$176.303.12x
99215Established patient office or other outpatient visit, 40-54 minutes281$37.7K$134.012.09x
95909Nerve conduction, 5-6 studies249$28.0K$112.283.07x
95910Nerve conduction, 7-8 studies74$11.1K$149.643.04x
J2930Injection, methylprednisolone sodium succinate, up to 125 mg1.5K$6.4K$4.237.10x
94375Diagnostic testing in a pulmonary function lab195$5.5K$27.982.77x
95937Testing with stimulation for assessment of function at muscle-nerve junction26$1.7K$64.423.07x

Markup Analysis

Charge-to-Payment Ratio

3.19x

This provider submits charges 3.19 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.19x means for every $100 Medicare pays, this provider initially charges $319. This is higher than the national average.

Location

Phoenix, AZ

Provider Verification

Always verify provider credentials and location before scheduling appointments. This data reflects Medicare payments and may not include all practice locations.

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Data Sources

  • โ€ข Centers for Medicare & Medicaid Services (CMS)
  • โ€ข Medicare Provider Utilization and Payment Data (2014-2023)
  • โ€ข National Plan and Provider Enumeration System (NPPES)

Last Updated: February 2026 (data through 2023, the latest CMS release)

Note: All data is from publicly available Medicare records. OpenMedicare is an independent journalism project not affiliated with CMS.

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