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Methodology•Download Data
  1. Home
  2. Providers
  3. Peter Chang Sing
⚕️
MDIndividual

Peter Chang Sing, M.D.

NPI: 1386678902
Santa Rosa, CA
10 years of data
Clinical Cardiac Electrophysiology
$5.0M
Total Payments
28.5K
Beneficiaries
38.2K
Services
3.01x
Markup Ratio

Peer Comparison

98th
percentile in specialty
This provider$5.0M
Specialty median$207.8K

📋 Key Findings

1Billed $5.0M over 10 years
23.01x markup ratio (above median)
398th percentile in Clinical Cardiac Electrophysiology by payments
49 procedures with >3x markup
✓ No flags detected

🔎 Data Analysis

This provider's $5.0M in total Medicare payments ranks in the 98th percentile of Clinical Cardiac Electrophysiology providers nationally.

This provider's billing patterns fall within normal ranges for their specialty.

AI-generated analysis based on Medicare payment data.

Annual Medicare Payments

Annual Services Provided

Avg Payment per Service

Markup Ratio Over Time

Submitted Charges vs. Medicare Payments

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

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$883.85$195.224.53x$688.63$508.6K3.9K2.8K
2015$608.21$195.503.11x$412.71$487.0K3.9K2.7K
2016$572.13$186.483.07x$385.65$538.5K4.3K3.2K
2017$573.26$183.403.13x$389.86$554.5K4.5K3.3K
2018$578.49$178.383.24x$400.11$426.2K4.0K3.0K
2019$532.40$180.772.95x$351.63$552.6K4.4K3.3K
2020$599.48$214.542.79x$384.94$440.8K2.9K2.2K
2021$622.06$232.622.67x$389.44$564.4K3.3K2.5K
2022$722.60$207.203.49x$515.40$472.9K2.9K2.3K
2023$684.73$176.593.88x$508.14$493.2K4.1K3.1K

Top Procedures (20)

93656Evaluation and insertion of catheters for recording, pacing, and treatment of abnormal heart rhythm
$977.1K
1.1K services$878.67/svc2.57x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$740.6K
8.5K services$86.66/svc2.28x markup
33249Insertion or replacement of single or dual chamber pacing defibrillator leads
$358.6K
484 services$740.94/svc2.57x markup
93657Destruction of tissue of right or left upper heart chamber via catheter for treatment of abnormal heart rhythm
$328.4K
1.0K services$320.40/svc2.60x markup
93613Insertion of catheters for 3D mapping of electrical impulses to heart muscles
$299.6K
1.1K services$275.66/svc2.86x markup
33208Insertion of new or replacement of permanent pacemaker including upper and lower chamber electrodes⚠ 3.5x markup
$259.2K
627 services$413.41/svc3.45x markup
93653Evaluation and insertion of catheters for creation of complete heart block
$210.2K
317 services$662.95/svc2.69x markup
99205New patient office or other outpatient visit, typically 60 minutes
$189.4K
1.2K services$156.82/svc1.87x markup
93623Programmed heart rhythm stimulation after drug infusion into a vein⚠ 3.6x markup
$159.6K
1.3K services$118.41/svc3.58x markup
99204New patient office or other outpatient visit, typically 45 minutes
$123.7K
901 services$137.28/svc2.43x markup
33225Insertion of left heart electrode for pacing defibrillator device
$123.3K
328 services$375.85/svc2.74x markup
93641Evaluation of single or dual chamber pacing cardioverter-defibrillator and generator at time of implantation or replacement⚠ 8.7x markup
$120.2K
912 services$131.77/svc8.68x markup
93650Insertion of catheters for creation of complete heart block⚠ 3.1x markup
$108.4K
259 services$418.58/svc3.09x markup
93662Ultrasound evaluation of heart blood vessel
$100.4K
873 services$114.96/svc2.92x markup
33228Removal and replacement of dual lead permanent pacemaker pulse generator⚠ 3.3x markup
$68.7K
245 services$280.28/svc3.30x markup
93280Evaluation, testing, and programming adjustment of permanent dual lead pacemaker system with physician analysis, review, and report⚠ 3.4x markup
$68.5K
1.4K services$47.38/svc3.35x markup
99215Established patient office or other outpatient, visit typically 40 minutes
$66.0K
568 services$116.22/svc1.98x markup
33264Removal and replacement of multiple lead pacing defibrillator pulse generator⚠ 4.7x markup
$59.4K
183 services$324.47/svc4.65x markup
33263Removal and replacement of dual lead pacing defibrillator pulse generator⚠ 4.4x markup
$59.1K
192 services$307.78/svc4.37x markup
93000Routine EKG using at least 12 leads including interpretation and report⚠ 4.2x markup
$50.9K
3.9K services$13.13/svc4.15x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
93656Evaluation and insertion of catheters for recording, pacing, and treatment of abnormal heart rhythm1.1K$977.1K$878.672.57x
99214Established patient office or other outpatient, visit typically 25 minutes8.5K$740.6K$86.662.28x
33249Insertion or replacement of single or dual chamber pacing defibrillator leads484$358.6K$740.942.57x
93657Destruction of tissue of right or left upper heart chamber via catheter for treatment of abnormal heart rhythm1.0K$328.4K$320.402.60x
93613Insertion of catheters for 3D mapping of electrical impulses to heart muscles1.1K$299.6K$275.662.86x
33208Insertion of new or replacement of permanent pacemaker including upper and lower chamber electrodes627$259.2K$413.413.45x
93653Evaluation and insertion of catheters for creation of complete heart block317$210.2K$662.952.69x
99205New patient office or other outpatient visit, typically 60 minutes1.2K$189.4K$156.821.87x
93623Programmed heart rhythm stimulation after drug infusion into a vein1.3K$159.6K$118.413.58x
99204New patient office or other outpatient visit, typically 45 minutes901$123.7K$137.282.43x
33225Insertion of left heart electrode for pacing defibrillator device328$123.3K$375.852.74x
93641Evaluation of single or dual chamber pacing cardioverter-defibrillator and generator at time of implantation or replacement912$120.2K$131.778.68x
93650Insertion of catheters for creation of complete heart block259$108.4K$418.583.09x
93662Ultrasound evaluation of heart blood vessel873$100.4K$114.962.92x
33228Removal and replacement of dual lead permanent pacemaker pulse generator245$68.7K$280.283.30x
93280Evaluation, testing, and programming adjustment of permanent dual lead pacemaker system with physician analysis, review, and report1.4K$68.5K$47.383.35x
99215Established patient office or other outpatient, visit typically 40 minutes568$66.0K$116.221.98x
33264Removal and replacement of multiple lead pacing defibrillator pulse generator183$59.4K$324.474.65x
33263Removal and replacement of dual lead pacing defibrillator pulse generator192$59.1K$307.784.37x
93000Routine EKG using at least 12 leads including interpretation and report3.9K$50.9K$13.134.15x

Markup Analysis

Charge-to-Payment Ratio

3.01x

This provider submits charges 3.01 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.01x means for every $100 Medicare pays, this provider initially charges $301. This is higher than the national average.

Location

Santa Rosa, CA

Provider Verification

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Data Sources

  • • Centers for Medicare & Medicaid Services (CMS)
  • • Medicare Provider Utilization and Payment Data (2014-2023)
  • • 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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